1 dnl Autoconf script for GNU Emacs
2 dnl To rebuild the 'configure' script from this, execute the command
4 dnl in the directory containing this script.
5 dnl If you changed any AC_DEFINES, also run autoheader.
7 dnl Copyright (C) 1994-1996, 1999-2018 Free Software Foundation, Inc.
9 dnl This file is part of GNU Emacs.
11 dnl GNU Emacs is free software: you can redistribute it and/or modify
12 dnl it under the terms of the GNU General Public License as published by
13 dnl the Free Software Foundation, either version 3 of the License, or
14 dnl (at your option) any later version.
16 dnl GNU Emacs is distributed in the hope that it will be useful,
17 dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
18 dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 dnl GNU General Public License for more details.
21 dnl You should have received a copy of the GNU General Public License
22 dnl along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
25 dnl Note this is parsed by (at least) make-dist and lisp/cedet/ede/emacs.el.
26 AC_INIT(GNU Emacs, 27.0.50, bug-gnu-emacs@gnu.org, , https://www.gnu.org/software/emacs/)
28 dnl Set emacs_config_options to the options of 'configure', quoted for the shell,
29 dnl and then quoted again for a C string. Separate options with spaces.
30 dnl Add some environment variables, if they were passed via the environment
31 dnl rather than on the command-line.
34 dnl This is the documented way to record the args passed to configure,
35 dnl rather than $ac_configure_args.
36 for opt in "$@" CFLAGS CPPFLAGS LDFLAGS; do
38 -n | --no-create | --no-recursion)
40 CFLAGS | CPPFLAGS | LDFLAGS)
41 eval 'test "${'$opt'+set}" = set' || continue
43 *" $opt="*) continue ;;
45 eval opt=$opt=\$$opt ;;
48 emacs_shell_specials=$IFS\''"#$&()*;<>?@<:@\\`{|~'
50 *[["$emacs_shell_specials"]]*)
53 emacs_quote_apostrophes="s/'/'\\\\''/g"
54 opt=`AS_ECHO(["$opt"]) | sed "$emacs_quote_apostrophes"` ;;
59 emacs_quote_for_c='s/[["\\]]/\\&/g; $!s/$/\\n\\/'
60 opt=`AS_ECHO(["$opt"]) | sed "$emacs_quote_for_c"` ;;
63 AS_VAR_APPEND([emacs_config_options], ["$optsep$opt"])
67 AC_CONFIG_HEADERS(src/config.h:src/config.in)
68 AC_CONFIG_SRCDIR(src/lisp.h)
69 AC_CONFIG_AUX_DIR(build-aux)
70 AC_CONFIG_MACRO_DIR(m4)
73 AC_CHECK_PROGS(XCRUN, [xcrun])
74 if test -n "$XCRUN"; then
75 if test -z "$MAKE"; then
76 dnl Call the variable MAKE_PROG, not MAKE, to avoid confusion with
77 dnl the usual MAKE variable that 'make' itself uses.
78 AC_CHECK_PROG([MAKE_PROG], [make], [yes])
79 if test -z "$MAKE_PROG"; then
82 xcsdkdir=`$XCRUN --show-sdk-path 2>/dev/null`
87 dnl Check for GNU Make and possibly set MAKE.
88 [emacs_check_gnu_make ()
90 emacs_makeout=`($1 --version) 2>/dev/null` &&
91 case $emacs_makeout in
92 'GNU Make '3.8[1-9]* | 'GNU Make '3.9[0-9]* | \
93 'GNU Make '3.[1-9][0-9][0-9]* | 'GNU Make '[4-9]* | 'GNU Make '[1-9][0-9]* )
94 ac_path_MAKE_found=:;;
97 AC_CACHE_CHECK([for GNU Make], [ac_cv_path_MAKE],
98 [ac_path_MAKE_found=false
99 if test -n "$MAKE"; then
100 emacs_check_gnu_make "$MAKE"
101 ac_cv_path_MAKE=$MAKE
103 emacs_tried_make=false
104 emacs_tried_gmake=false
105 emacs_tried_gnumake=false
106 AC_PATH_PROGS_FEATURE_CHECK([MAKE], [make gmake gnumake],
107 [[emacs_check_gnu_make "$ac_path_MAKE"
108 if $ac_path_MAKE_found; then
109 # Use the fully-qualified program name only if the basename
110 # would not resolve to it.
111 if eval \$emacs_tried_$ac_prog; then
112 ac_cv_path_MAKE=$ac_path_MAKE
114 ac_cv_path_MAKE=$ac_prog
117 eval emacs_tried_$ac_prog=:]])
119 $ac_path_MAKE_found || {
120 AC_MSG_ERROR([[Building Emacs requires GNU Make, at least version 3.81.
121 If you have it installed under another name, configure with 'MAKE=...'.
122 For example, run '$0 MAKE=gnu-make'.]])
124 MAKE=$ac_cv_path_MAKE
127 dnl Canonicalize the configuration name.
133 if test -z "$host_alias"; then
135 # No --host argument was given to 'configure'; therefore $host
136 # was set to a default value based on the build platform. But
137 # this default value may be wrong if we are building from a
138 # 64-bit MSYS[2] pre-configured to build 32-bit MinGW programs.
139 # Therefore, we'll try to get the right host platform from the
142 AC_MSG_CHECKING([the compiler's target])
143 if test -z "$CC"; then
148 cc_target=`$cc -v 2>&1 | sed -n 's/Target: //p'`
152 "") AC_MSG_ERROR([Impossible to obtain $cc compiler target.
153 Please explicitly provide --host.])
155 *) AC_MSG_WARN([Compiler reported non-standard target.
156 Defaulting to $host.])
159 AC_MSG_RESULT([$host])
162 . $srcdir/nt/mingw-cfg.site
166 # srcdir is an absolute path. In this case, force the format
167 # "/c/foo/bar", to simplify later conversions to native Windows
168 # format ("c:/foo/bar").
169 srcdir=`cd "${srcdir}" && pwd -W`
170 # 'eval' pacifies strict POSIX non-MinGW shells (Bug#18612).
171 # We downcase the drive letter to avoid warnings when
172 # generating autoloads.
173 eval 'srcdir=/`echo ${srcdir:0:1} | sed "y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/"`"${srcdir:2}"'
179 configuration=${host_alias-${build_alias-$host}}
180 emacs_uname_r=`uname -r`
182 dnl Support for --program-prefix, --program-suffix and
183 dnl --program-transform-name options
186 dnl It is important that variables on the RHS not be expanded here,
187 dnl hence the single quotes. This is per the GNU coding standards, see
188 dnl (autoconf) Installation Directory Variables
189 dnl See also epaths.h below.
190 lispdir='${datadir}/emacs/${version}/lisp'
191 standardlisppath='${lispdir}'
192 locallisppath='${datadir}/emacs/${version}/site-lisp:'\
193 '${datadir}/emacs/site-lisp'
194 lisppath='${locallisppath}:${standardlisppath}'
195 etcdir='${datadir}/emacs/${version}/etc'
196 archlibdir='${libexecdir}/emacs/${version}/${configuration}'
197 etcdocdir='${datadir}/emacs/${version}/etc'
198 gamedir='${localstatedir}/games/emacs'
200 dnl Special option to disable the most of other options.
202 [AS_HELP_STRING([--without-all],
203 [omit almost all features and build
204 small executable with minimal dependencies])],
205 [with_features=$withval],
208 dnl OPTION_DEFAULT_OFF(NAME, HELP-STRING)
209 dnl Create a new --with option that defaults to being disabled.
210 dnl NAME is the base name of the option. The shell variable with_NAME
211 dnl will be set to either the user's value (if the option is
212 dnl specified; 'yes' for a plain --with-NAME) or to 'no' (if the
213 dnl option is not specified). Note that the shell variable name is
214 dnl constructed as autoconf does, by replacing non-alphanumeric
215 dnl characters with "_".
216 dnl HELP-STRING is the help text for the option.
217 AC_DEFUN([OPTION_DEFAULT_OFF], [dnl
218 AC_ARG_WITH([$1],[AS_HELP_STRING([--with-$1],[$2])],[],[dnl
219 m4_bpatsubst([with_$1], [[^0-9a-z]], [_])=no])dnl
222 dnl OPTION_DEFAULT_ON(NAME, HELP-STRING)
223 dnl Create a new --with option that defaults to $with_features.
224 dnl NAME is the base name of the option. The shell variable with_NAME
225 dnl will be set either to 'no' (for a plain --without-NAME) or to
226 dnl 'yes' (if the option is not specified). Note that the shell
227 dnl variable name is constructed as autoconf does, by replacing
228 dnl non-alphanumeric characters with "_".
229 dnl HELP-STRING is the help text for the option.
230 AC_DEFUN([OPTION_DEFAULT_ON], [dnl
231 AC_ARG_WITH([$1],[AS_HELP_STRING([--without-$1],[$2])],[],[dnl
232 m4_bpatsubst([with_$1], [[^0-9a-z]], [_])=$with_features])dnl
235 # For retrieving mail, unencrypted network connections are the default
236 # only on native MS-Windows platforms. (FIXME: These platforms should
237 # also be secure by default.)
239 AC_ARG_WITH([mailutils],
240 [AS_HELP_STRING([--with-mailutils],
241 [rely on GNU Mailutils, so that the --without-pop through --with-mailhost
242 options are irrelevant; this is the default if GNU Mailutils is
245 [with_mailutils=$with_features
246 if test "$with_mailutils" = yes; then
247 (movemail --version) >/dev/null 2>&1 || with_mailutils=no
249 if test "$with_mailutils" = no; then
252 AC_SUBST([with_mailutils])
255 [AS_HELP_STRING([--with-pop],
256 [Support POP mail retrieval if Emacs movemail is used (not recommended,
257 as Emacs movemail POP is insecure). This is the default only on
258 native MS-Windows.])],
261 *-mingw*) with_pop=yes;;
262 *) with_pop=no-by-default;;
264 if test "$with_pop" = yes; then
265 AC_DEFINE(MAIL_USE_POP)
267 AH_TEMPLATE(MAIL_USE_POP, [Define to support POP mail retrieval.])dnl
269 OPTION_DEFAULT_OFF([kerberos],[support Kerberos-authenticated POP])
270 if test "$with_kerberos" != no; then
273 AH_TEMPLATE(KERBEROS,
274 [Define to support Kerberos-authenticated POP mail retrieval.])dnl
276 OPTION_DEFAULT_OFF([kerberos5],[support Kerberos version 5 authenticated POP])
277 if test "${with_kerberos5}" != no; then
278 if test "${with_kerberos}" = no; then
282 AC_DEFINE(KERBEROS5, 1, [Define to use Kerberos 5 instead of Kerberos 4.])
285 OPTION_DEFAULT_OFF([hesiod],[support Hesiod to get the POP server host])
286 dnl FIXME hesiod support may not be present, so it seems like an error
287 dnl to define, or at least use, this unconditionally.
288 if test "$with_hesiod" != no; then
289 AC_DEFINE(HESIOD, 1, [Define to support using a Hesiod database to find the POP server.])
292 OPTION_DEFAULT_OFF([mail-unlink],[unlink, rather than empty, mail spool after reading])
293 if test "$with_mail_unlink" != no; then
294 AC_DEFINE(MAIL_UNLINK_SPOOL, 1, [Define to unlink, rather than empty, mail spool after reading.])
297 AC_ARG_WITH([mailhost],[AS_HELP_STRING([--with-mailhost=HOSTNAME],
298 [string giving default POP mail host])],
299 AC_DEFINE_UNQUOTED(MAILHOST, ["$withval"], [String giving fallback POP mail host.]))
301 AC_ARG_WITH([sound],[AS_HELP_STRING([--with-sound=VALUE],
302 [compile with sound support (VALUE one of: yes, alsa, oss, bsd-ossaudio, no;
303 default yes). Only for GNU/Linux, FreeBSD, NetBSD, MinGW, Cygwin.])],
304 [ case "${withval}" in
305 yes|no|alsa|oss|bsd-ossaudio) val=$withval ;;
306 *) AC_MSG_ERROR(['--with-sound=$withval' is invalid;
307 this option's value should be 'yes', 'no', 'alsa', 'oss', or 'bsd-ossaudio'.])
312 [with_sound=$with_features])
314 dnl FIXME currently it is not the last.
315 dnl This should be the last --with option, because --with-x is
316 dnl added later on when we find the file name of X, and it's best to
317 dnl keep them together visually.
318 AC_ARG_WITH([x-toolkit],[AS_HELP_STRING([--with-x-toolkit=KIT],
319 [use an X toolkit (KIT one of: yes or gtk, gtk2, gtk3, lucid or athena, motif, no)])],
320 [ case "${withval}" in
321 y | ye | yes ) val=gtk ;;
323 l | lu | luc | luci | lucid ) val=lucid ;;
324 a | at | ath | athe | athen | athena ) val=athena ;;
325 m | mo | mot | moti | motif ) val=motif ;;
326 g | gt | gtk ) val=gtk ;;
330 AC_MSG_ERROR(['--with-x-toolkit=$withval' is invalid;
331 this option's value should be 'yes', 'no', 'lucid', 'athena', 'motif', 'gtk',
332 'gtk2' or 'gtk3'. 'yes' and 'gtk' are synonyms.
333 'athena' and 'lucid' are synonyms.])
339 OPTION_DEFAULT_OFF([wide-int], [prefer wide Emacs integers (typically 62-bit); allows buffer and string size up to 2GB on 32-bit hosts, at the cost of 10% to 30% slowdown of Lisp interpreter and larger memory footprint])
340 if test "$with_wide_int" = yes; then
341 AC_DEFINE([WIDE_EMACS_INT], 1, [Use long long for EMACS_INT if available.])
344 dnl _ON results in a '--without' option in the --help output, so
345 dnl the help text should refer to "don't compile", etc.
346 with_xpm_set=${with_xpm+set}
347 OPTION_DEFAULT_ON([xpm],[don't compile with XPM image support])
348 OPTION_DEFAULT_ON([jpeg],[don't compile with JPEG image support])
349 OPTION_DEFAULT_ON([tiff],[don't compile with TIFF image support])
350 OPTION_DEFAULT_ON([gif],[don't compile with GIF image support])
351 OPTION_DEFAULT_ON([png],[don't compile with PNG image support])
352 OPTION_DEFAULT_ON([rsvg],[don't compile with SVG image support])
353 OPTION_DEFAULT_ON([lcms2],[don't compile with Little CMS support])
354 OPTION_DEFAULT_ON([libsystemd],[don't compile with libsystemd support])
355 OPTION_DEFAULT_OFF([cairo],[compile with Cairo drawing (experimental)])
356 OPTION_DEFAULT_ON([xml2],[don't compile with XML parsing support])
357 OPTION_DEFAULT_ON([imagemagick],[don't compile with ImageMagick image support])
358 OPTION_DEFAULT_ON([json], [don't compile with native JSON support])
360 OPTION_DEFAULT_ON([xft],[don't use XFT for anti aliased fonts])
361 OPTION_DEFAULT_ON([libotf],[don't use libotf for OpenType font support])
362 OPTION_DEFAULT_ON([m17n-flt],[don't use m17n-flt for text shaping])
364 OPTION_DEFAULT_ON([toolkit-scroll-bars],[don't use Motif or Xaw3d scroll bars])
365 OPTION_DEFAULT_ON([xaw3d],[don't use Xaw3d])
366 OPTION_DEFAULT_ON([xim],[don't use X11 XIM])
367 AC_ARG_WITH([ns],[AS_HELP_STRING([--with-ns],
368 [use Nextstep (macOS Cocoa or GNUstep) windowing system.
369 On by default on macOS.])],[],[with_ns=maybe])
370 OPTION_DEFAULT_OFF([w32], [use native MS Windows GUI in a Cygwin build])
372 OPTION_DEFAULT_ON([gpm],[don't use -lgpm for mouse support on a GNU/Linux console])
373 OPTION_DEFAULT_ON([dbus],[don't compile with D-Bus support])
374 AC_ARG_WITH([gconf],[AS_HELP_STRING([--with-gconf],
375 [compile with Gconf support (Gsettings replaces this)])],[],
376 [if test $with_features = yes; then
381 OPTION_DEFAULT_ON([gsettings],[don't compile with GSettings support])
382 OPTION_DEFAULT_ON([selinux],[don't compile with SELinux support])
383 OPTION_DEFAULT_ON([gnutls],[don't use -lgnutls for SSL/TLS support])
384 OPTION_DEFAULT_ON([zlib],[don't compile with zlib decompression support])
385 OPTION_DEFAULT_OFF([modules],[compile with dynamic modules support])
386 OPTION_DEFAULT_ON([threads],[don't compile with elisp threading support])
388 AC_ARG_WITH([file-notification],[AS_HELP_STRING([--with-file-notification=LIB],
389 [use a file notification library (LIB one of: yes, inotify, kqueue, gfile, w32, no)])],
390 [ case "${withval}" in
391 y | ye | yes ) val=yes ;;
393 i | in | ino | inot | inoti | inotif | inotify ) val=inotify ;;
394 k | kq | kqu | kque | kqueu | kqueue ) val=kqueue ;;
395 g | gf | gfi | gfil | gfile ) val=gfile ;;
396 w | w3 | w32 ) val=w32 ;;
397 * ) AC_MSG_ERROR(['--with-file-notification=$withval' is invalid;
398 this option's value should be 'yes', 'no', 'inotify', 'kqueue', 'gfile' or 'w32'.
399 'yes' is a synonym for 'w32' on MS-Windows, for 'no' on Nextstep,
400 otherwise for the first of 'inotify', 'kqueue' or 'gfile' that is usable.])
403 with_file_notification=$val
405 [with_file_notification=$with_features])
407 OPTION_DEFAULT_OFF([xwidgets],
408 [enable use of some gtk widgets in Emacs buffers (requires gtk3)])
410 ## For the times when you want to build Emacs but don't have
411 ## a suitable makeinfo, and can live without the manuals.
412 dnl https://lists.gnu.org/r/emacs-devel/2008-04/msg01844.html
413 OPTION_DEFAULT_ON([makeinfo],[don't require makeinfo for building manuals])
415 ## Makefile.in needs the cache file name.
418 ## This is an option because I do not know if all info/man support
419 ## compressed files, nor how to test if they do so.
420 OPTION_DEFAULT_ON([compress-install],
421 [don't compress some files (.el, .info, etc.) when installing. Equivalent to:
422 make GZIP_PROG= install])
424 AC_ARG_WITH(gameuser,dnl
425 [AS_HELP_STRING([--with-gameuser=USER_OR_GROUP],
426 [user for shared game score files.
427 An argument prefixed by ':' specifies a group instead.])])
430 case ${with_gameuser} in
432 yes) gamegroup=games ;;
433 :*) gamegroup=${with_gameuser#:} ;;
434 *) gameuser=${with_gameuser} ;;
437 AC_ARG_WITH([gnustep-conf],dnl
438 [AS_HELP_STRING([--with-gnustep-conf=FILENAME],
439 [name of GNUstep configuration file to use on systems where the command
440 'gnustep-config' does not work; default $GNUSTEP_CONFIG_FILE, or
441 /etc/GNUstep/GNUstep.conf])])
442 test "X${with_gnustep_conf}" != X && test "${with_gnustep_conf}" != yes && \
443 GNUSTEP_CONFIG_FILE="${with_gnustep_conf}"
444 test "X$GNUSTEP_CONFIG_FILE" = "X" && \
445 GNUSTEP_CONFIG_FILE=/etc/GNUstep/GNUstep.conf
447 AC_ARG_ENABLE(ns-self-contained,
448 [AS_HELP_STRING([--disable-ns-self-contained],
449 [disable self contained build under NeXTstep])],
450 EN_NS_SELF_CONTAINED=$enableval,
451 EN_NS_SELF_CONTAINED=yes)
454 AC_ARG_ENABLE(locallisppath,
455 [AS_HELP_STRING([--enable-locallisppath=PATH],
456 [directories Emacs should search for lisp files specific
458 if test "${enableval}" = "no"; then
460 elif test "${enableval}" != "yes"; then
461 locallisppath=${enableval} locallisppathset=yes
464 AC_ARG_ENABLE(checking,
465 [AS_HELP_STRING([--enable-checking@<:@=LIST@:>@],
466 [enable expensive run-time checks. With LIST,
467 enable only specific categories of checks.
468 Categories are: all,yes,no.
469 Flags are: stringbytes, stringoverrun, stringfreelist,
470 xmallocoverrun, conslist, glyphs])],
471 [ac_checking_flags="${enableval}"],[])
472 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
473 for check in $ac_checking_flags
476 # these set all the flags to specific states
477 yes) ac_enable_checking=1 ;;
478 no) ac_enable_checking= ;
479 ac_gc_check_stringbytes= ;
480 ac_gc_check_string_overrun= ;
481 ac_gc_check_string_free_list= ;
482 ac_xmalloc_overrun= ;
483 ac_gc_check_cons_list= ;
485 all) ac_enable_checking=1 ;
486 ac_gc_check_stringbytes=1 ;
487 ac_gc_check_string_overrun=1 ;
488 ac_gc_check_string_free_list=1 ;
489 ac_xmalloc_overrun=1 ;
490 ac_gc_check_cons_list=1 ;
492 # these enable particular checks
493 stringbytes) ac_gc_check_stringbytes=1 ;;
494 stringoverrun) ac_gc_check_string_overrun=1 ;;
495 stringfreelist) ac_gc_check_string_free_list=1 ;;
496 xmallocoverrun) ac_xmalloc_overrun=1 ;;
497 conslist) ac_gc_check_cons_list=1 ;;
498 glyphs) ac_glyphs_debug=1 ;;
499 *) AC_MSG_ERROR(unknown check category $check) ;;
504 if test x$ac_enable_checking != x ; then
505 AC_DEFINE(ENABLE_CHECKING, 1,
506 [Define to 1 if expensive run-time data type and consistency checks are enabled.])
508 if test x$ac_gc_check_stringbytes != x ; then
509 AC_DEFINE(GC_CHECK_STRING_BYTES, 1,
510 [Define this temporarily to hunt a bug. If defined, the size of
511 strings is redundantly recorded in sdata structures so that it can
512 be compared to the sizes recorded in Lisp strings.])
514 if test x$ac_gc_check_string_overrun != x ; then
515 AC_DEFINE(GC_CHECK_STRING_OVERRUN, 1,
516 [Define this to check for short string overrun.])
518 if test x$ac_gc_check_string_free_list != x ; then
519 AC_DEFINE(GC_CHECK_STRING_FREE_LIST, 1,
520 [Define this to check the string free list.])
522 if test x$ac_xmalloc_overrun != x ; then
523 AC_DEFINE(XMALLOC_OVERRUN_CHECK, 1,
524 [Define this to check for malloc buffer overrun.])
526 if test x$ac_gc_check_cons_list != x ; then
527 AC_DEFINE(GC_CHECK_CONS_LIST, 1,
528 [Define this to check for errors in cons list.])
530 if test x$ac_glyphs_debug != x ; then
531 AC_DEFINE(GLYPH_DEBUG, 1,
532 [Define this to enable glyphs debugging code.])
535 dnl The name of this option is unfortunate. It predates, and has no
536 dnl relation to, the "sampling-based elisp profiler" added in 24.3.
537 dnl Actually, it stops it working.
538 dnl https://lists.gnu.org/r/emacs-devel/2012-11/msg00393.html
539 AC_ARG_ENABLE(profiling,
540 [AS_HELP_STRING([--enable-profiling],
541 [build emacs with low-level, gprof profiling support.
542 Mainly useful for debugging Emacs itself. May not work on
543 all platforms. Stops profiler.el working.])],
544 [ac_enable_profiling="${enableval}"],[])
545 if test x$ac_enable_profiling != x ; then
546 PROFILING_CFLAGS="-DPROFILING=1 -pg"
550 AC_SUBST(PROFILING_CFLAGS)
552 AC_ARG_ENABLE(autodepend,
553 [AS_HELP_STRING([--enable-autodepend],
554 [automatically generate dependencies to .h-files.
555 Requires gcc, enabled if found.])],
556 [ac_enable_autodepend="${enableval}"],[ac_enable_autodepend=yes])
558 AC_ARG_ENABLE(gtk-deprecation-warnings,
559 [AS_HELP_STRING([--enable-gtk-deprecation-warnings],
560 [Show Gtk+/Gdk deprecation warnings for Gtk+ >= 3.0])],
561 [ac_enable_gtk_deprecation_warnings="${enableval}"],[])
564 AC_ARG_ENABLE([build-details],
565 [AS_HELP_STRING([--disable-build-details],
566 [Make the build more deterministic by omitting host
567 names, time stamps, etc. from the output.])],
568 [test "$enableval" = no && BUILD_DETAILS=--no-build-details])
569 AC_SUBST([BUILD_DETAILS])
571 dnl This used to use changequote, but, apart from 'changequote is evil'
572 dnl per the autoconf manual, we can speed up autoconf somewhat by quoting
573 dnl the great gob of text. Thus it's not processed for possible expansion.
574 dnl Just make sure the brackets remain balanced.
576 dnl Since Emacs can't find matching pairs of quotes, boundaries are
577 dnl indicated by comments.
581 ### If you add support for a new configuration, add code to this
582 ### switch statement to recognize your configuration name and select
583 ### the appropriate opsys.
585 ### As far as handling version numbers on operating systems is
586 ### concerned, make sure things will fail in a fixable way. If
587 ### /etc/MACHINES doesn't say anything about version numbers, be
588 ### prepared to handle anything reasonably. If version numbers
589 ### matter, be sure /etc/MACHINES says something about it.
592 case "${canonical}" in
594 ## GNU/Linux and similar ports
609 ## FreeBSD kernel + glibc based userland
620 *-*-openbsd* | *-*-mirbsd* )
624 ## Apple Darwin / macOS
626 case "${canonical}" in
627 *-apple-darwin[0-9].*) unported=yes ;;
628 i[3456]86-* | x86_64-* ) ;;
632 ## FIXME: Find a way to use Fink if available (Bug#11507).
635 ## Chromium Native Client
645 ## HP 9000 series 700 and 800, running HP/UX
649 hppa*-hp-hpux1[1-9]* )
651 CFLAGS="-D_INCLUDE__STDC_A1_SOURCE $CFLAGS"
655 rs6000-ibm-aix4.[23]* )
658 powerpc-ibm-aix4.[23]* )
661 rs6000-ibm-aix[56]* )
664 powerpc-ibm-aix[5-9]* | powerpc-ibm-aix[1-9][0-9]* )
670 | i[3456]86-*-solaris2* | i[3456]86-*-sunos5* \
671 | x86_64-*-solaris2* | x86_64-*-sunos5*)
672 case "${canonical}" in
674 amd64-*-*|x86_64-*-*) ;;
678 case "${canonical}" in
679 *-sunos5.[1-9][0-9]* | *-solaris2.[1-9][0-9]* )
681 emacs_check_sunpro_c=yes
683 *-sunos5.[1-5]* | *-solaris2.[1-5]* ) unported=yes ;;
684 ## Note that Emacs 23.1's NEWS said the following would be dropped.
685 *-sunos5.6* | *-solaris2.6* )
689 ## 5.7 EOL Aug 2008, 5.8 EOL Mar 2012.
690 *-sunos5.[7-9]* | *-solaris2.[7-9]* )
692 emacs_check_sunpro_c=yes
695 ## Watch out for a compiler that we know will not work.
696 case "${canonical}" in
697 *-solaris* | *-sunos5* )
698 if [ "x$CC" = x/usr/ucb/cc ]; then
699 ## /usr/ucb/cc doesn't work;
700 ## we should find some other compiler that does work.
711 test -z "$CC" && CC=qcc
712 CFLAGS="$CFLAGS -D__NO_EXT_QNX"
713 LDFLAGS="-N2MB $LDFLAGS"
716 ## Intel 386 machines where we don't care about the manufacturer.
718 case "${canonical}" in
719 *-darwin* ) opsys=darwin ;;
722 # MinGW overrides and adds some system headers in nt/inc.
723 GCC_TEST_OPTIONS="-I $srcdir/nt/inc"
725 *-sysv4.2uw* ) opsys=unixware ;;
726 *-sysv5uw* ) opsys=unixware ;;
727 *-sysv5OpenUNIX* ) opsys=unixware ;;
728 ## Otherwise, we'll fall through to the generic opsys code at the bottom.
734 case "${canonical}" in
737 # MinGW overrides and adds some system headers in nt/inc.
738 GCC_TEST_OPTIONS="-I $srcdir/nt/inc"
740 ## Otherwise, we'll fall through to the generic opsys code at the bottom.
749 ### If the code above didn't choose an operating system, just choose
750 ### an operating system based on the configuration name. You really
751 ### only want to use this when you have no idea what the right
752 ### operating system is; if you know what operating systems a machine
753 ### runs, it's cleaner to make it explicit in the case statement
755 if test x"${opsys}" = x; then
756 case "${canonical}" in
757 *-gnu* ) opsys=gnu ;;
767 if test $unported = yes; then
768 AC_MSG_ERROR([Emacs does not support '${canonical}' systems.
769 If you think it should, please send a report to ${PACKAGE_BUGREPORT}.
770 Check 'etc/MACHINES' for recognized configuration names.])
773 #### Choose a compiler.
775 dnl Don't bother to test for C89.
776 AC_DEFUN([_AC_PROG_CC_C89], [$2])
778 dnl Sets GCC=yes if using gcc.
779 AC_PROG_CC([gcc cc cl clang "$XCRUN gcc" "$XCRUN clang"])
780 if test -n "$XCRUN"; then
781 AC_CHECK_PROGS(AR, [ar "$XCRUN ar"])
782 test -n "$AR" && export AR
785 dnl Emacs needs C99 or later.
790 if test x$GCC = xyes; then
791 test "x$GCC_TEST_OPTIONS" != x && CC="$CC $GCC_TEST_OPTIONS"
794 # Avoid gnulib's tests for -lcrypto, so that there's no static dependency on it.
795 AC_DEFUN([gl_CRYPTO_CHECK])
796 # Avoid gnulib's tests for HAVE_WORKING_O_NOATIME and HAVE_WORKING_O_NOFOLLOW,
797 # as we don't use them.
798 AC_DEFUN([gl_FCNTL_O_FLAGS])
799 # Avoid gnulib's test for pthread_sigmask.
801 for func in $ac_func_list; do
802 test $func = pthread_sigmask || AS_VAR_APPEND([funcs], [" $func"])
805 # Use the system putenv even if it lacks GNU features, as we don't need them,
806 # and the gnulib replacement runs afoul of a FreeBSD 10.1 bug; see Bug#19874.
807 AC_CHECK_FUNCS_ONCE([putenv])
808 AC_DEFUN([gl_FUNC_PUTENV],
809 [test "$ac_cv_func_putenv" = yes || REPLACE_PUTENV=1])
810 # Emacs does not use the wchar or wctype-h modules.
811 AC_DEFUN([gt_TYPE_WINT_T],
812 [GNULIB_OVERRIDES_WINT_T=0
813 AC_SUBST([GNULIB_OVERRIDES_WINT_T])])
815 # Initialize gnulib right after choosing the compiler.
816 dnl Amongst other things, this sets AR and ARFLAGS.
819 if test "$ac_test_CFLAGS" != set; then
820 # It's helpful to have C macros available to GDB, so prefer -g3 to -g
821 # if -g3 works and the user does not specify CFLAGS.
822 # This test must follow gl_EARLY; otherwise AC_LINK_IFELSE complains.
825 emacs_g3_CFLAGS='-g3';;
827 emacs_g3_CFLAGS='-g3 -O2';;
831 if test -n "$emacs_g3_CFLAGS"; then
832 emacs_save_CFLAGS=$CFLAGS
833 CFLAGS=$emacs_g3_CFLAGS
834 AC_CACHE_CHECK([whether $CC accepts $emacs_g3_CFLAGS],
835 [emacs_cv_prog_cc_g3],
836 [AC_LINK_IFELSE([AC_LANG_PROGRAM()],
837 [emacs_cv_prog_cc_g3=yes],
838 [emacs_cv_prog_cc_g3=no])])
839 if test $emacs_cv_prog_cc_g3 != yes; then
840 CFLAGS=$emacs_save_CFLAGS
842 if test $opsys = mingw32; then
843 CFLAGS="$CFLAGS -gdwarf-2"
850 # No optimization flag was inferred for this non-GCC compiler.
851 # Try -O. This is needed for xlc on AIX; see Bug#14258.
852 emacs_save_CFLAGS=$CFLAGS
853 test -z "$CFLAGS" || CFLAGS="$CFLAGS "
855 AC_CACHE_CHECK([whether $CC accepts -O],
856 [emacs_cv_prog_cc_o],
857 [AC_LINK_IFELSE([AC_LANG_PROGRAM()],
858 [emacs_cv_prog_cc_o=yes],
859 [emacs_cv_prog_cc_o=no])])
860 if test $emacs_cv_prog_cc_o != yes; then
861 CFLAGS=$emacs_save_CFLAGS
866 # gl_GCC_VERSION_IFELSE([major], [minor], [run-if-found], [run-if-not-found])
867 # ---------------------------------------------------------------------------
868 # If $CPP is gcc-MAJOR.MINOR or newer, then run RUN-IF-FOUND.
869 # Otherwise, run RUN-IF-NOT-FOUND.
870 AC_DEFUN([gl_GCC_VERSION_IFELSE],
874 #if ($1) < __GNUC__ || (($1) == __GNUC__ && ($2) <= __GNUC_MINOR__)
877 # error "your version of gcc is older than $1.$2"
884 AC_ARG_ENABLE([gcc-warnings],
885 [AS_HELP_STRING([--enable-gcc-warnings@<:@=TYPE@:>@],
886 [control generation of GCC warnings. The TYPE 'yes'
887 means to fail if any warnings are issued; 'warn-only'
888 means issue warnings without failing (default for
889 developer builds); 'no' means disable warnings
890 (default for non-developer builds).])],
893 *) AC_MSG_ERROR([bad value $enableval for gcc-warnings option]) ;;
895 gl_gcc_warnings=$enableval],
896 [# By default, use 'warn-only' if it looks like the invoker of 'configure'
897 # is a developer as opposed to a builder. This is most likely true
898 # if GCC is recent enough and there is a .git directory or file;
899 # however, if there is also a .tarball-version file it is probably
900 # just a release imported into Git for patch management.
902 if test -e "$srcdir"/.git && test ! -f "$srcdir"/.tarball-version; then
903 gl_GCC_VERSION_IFELSE([5], [3], [gl_gcc_warnings=warn-only])
906 AC_ARG_ENABLE([check-lisp-object-type],
907 [AS_HELP_STRING([--enable-check-lisp-object-type],
908 [Enable compile time checks for the Lisp_Object data type,
909 which can catch some bugs during development.])])
910 if test "$enable_check_lisp_object_type" = yes; then
911 AC_DEFINE([CHECK_LISP_OBJECT_TYPE], 1,
912 [Define to enable compile-time checks for the Lisp_Object data type.])
915 # clang is unduly picky about some things.
916 AC_CACHE_CHECK([whether the compiler is clang], [emacs_cv_clang],
923 [emacs_cv_clang=yes],
924 [emacs_cv_clang=no])])
927 # When compiling with GCC, prefer -isystem to -I when including system
928 # include files, to avoid generating useless diagnostics for the files.
929 AS_IF([test $gl_gcc_warnings = no],
932 AS_IF([test "$emacs_cv_clang" = yes],
934 # Turn off some warnings if supported.
935 gl_WARN_ADD([-Wno-switch])
936 gl_WARN_ADD([-Wno-pointer-sign])
937 gl_WARN_ADD([-Wno-string-plus-int])
938 gl_WARN_ADD([-Wno-unknown-attributes])
943 # This, $nw, is the list of warnings we disable.
946 case $with_x_toolkit in
947 lucid | athena | motif)
948 # Old toolkits mishandle 'const'.
949 nw="$nw -Wwrite-strings"
952 AS_IF([test $gl_gcc_warnings = yes],
953 [WERROR_CFLAGS=-Werror])
955 nw="$nw -Wcast-align -Wcast-align=strict" # Emacs is tricky with pointers.
956 nw="$nw -Wduplicated-branches" # Too many false alarms
957 nw="$nw -Wformat-overflow=2" # False alarms due to GCC bug 80776
958 nw="$nw -Wsystem-headers" # Don't let system headers trigger warnings
959 nw="$nw -Woverlength-strings" # Not a problem these days
960 nw="$nw -Wformat-nonliteral" # we do this a lot
961 nw="$nw -Wvla" # Emacs uses <vla.h>.
962 nw="$nw -Wunused-const-variable=2" # lisp.h declares const objects.
963 nw="$nw -Winline" # OK to ignore 'inline'
964 nw="$nw -Wstrict-overflow" # OK to optimize assuming that
965 # signed overflow has undefined behavior
966 nw="$nw -Wsync-nand" # irrelevant here, and provokes ObjC warning
967 nw="$nw -Wunsafe-loop-optimizations" # OK to suppress unsafe optimizations
968 nw="$nw -Wbad-function-cast" # These casts are no worse than others.
970 # Emacs doesn't care about shadowing; see
971 # <https://lists.gnu.org/r/emacs-diffs/2011-11/msg00265.html>.
974 # Emacs's use of alloca inhibits protecting the stack.
975 nw="$nw -Wstack-protector"
977 # Emacs's use of partly-const functions such as Fgnutls_available_p
978 # make this option problematic.
979 nw="$nw -Wsuggest-attribute=const"
981 # Emacs's use of partly-pure functions such as CHECK_TYPE make this
982 # option problematic.
983 nw="$nw -Wsuggest-attribute=pure"
985 # This part is merely for shortening the command line,
986 # since -Wall implies -Wswitch.
989 # This part is merely for shortening the command line,
990 # since -Wno-FOO needs to be added below regardless.
991 nw="$nw -Wmissing-field-initializers"
992 nw="$nw -Woverride-init"
993 nw="$nw -Wtype-limits"
994 nw="$nw -Wunused-parameter"
996 if test "$emacs_cv_clang" = yes; then
997 nw="$nw -Wcast-align"
998 nw="$nw -Wdouble-promotion"
999 nw="$nw -Wmissing-braces"
1002 # These cause too much noise in the MinGW build
1003 if test $opsys = mingw32; then
1004 nw="$nw -Wpointer-sign"
1005 nw="$nw -Wsuggest-attribute=format"
1008 gl_MANYWARN_ALL_GCC([ws])
1009 gl_MANYWARN_COMPLEMENT([ws], [$ws], [$nw])
1013 gl_WARN_ADD([-Wredundant-decls]) # Prefer this, as we don't use Bison.
1014 gl_WARN_ADD([-Wno-missing-field-initializers]) # We need this one
1015 gl_WARN_ADD([-Wno-override-init]) # More trouble than it is worth
1016 gl_WARN_ADD([-Wno-sign-compare]) # Too many warnings for now
1017 gl_WARN_ADD([-Wno-type-limits]) # Too many warnings for now
1018 gl_WARN_ADD([-Wno-unused-parameter]) # Too many warnings for now
1019 gl_WARN_ADD([-Wno-format-nonliteral])
1021 # clang is unduly picky about braces.
1022 if test "$emacs_cv_clang" = yes; then
1023 gl_WARN_ADD([-Wno-missing-braces])
1026 # This causes too much noise in the MinGW build
1027 if test $opsys = mingw32; then
1028 gl_WARN_ADD([-Wno-pointer-sign])
1031 AC_DEFINE([GCC_LINT], [1], [Define to 1 if --enable-gcc-warnings.])
1032 AC_DEFINE([GNULIB_PORTCHECK], [1], [enable some gnulib portability checks])
1033 AH_VERBATIM([GNULIB_PORTCHECK_FORTIFY_SOURCE],
1034 [/* Enable compile-time and run-time bounds-checking, and some warnings,
1035 without upsetting glibc 2.15+. */
1036 #if (defined GNULIB_PORTCHECK && !defined _FORTIFY_SOURCE \
1037 && defined __OPTIMIZE__ && __OPTIMIZE__)
1038 # define _FORTIFY_SOURCE 2
1043 # clang is picky about these regardless of whether
1044 # --enable-gcc-warnings is specified.
1045 if test "$emacs_cv_clang" = yes; then
1046 gl_WARN_ADD([-Wno-initializer-overrides])
1047 gl_WARN_ADD([-Wno-tautological-compare])
1048 gl_WARN_ADD([-Wno-tautological-constant-out-of-range-compare])
1051 # Use a slightly smaller set of warning options for lib/.
1053 nw="$nw -Wunused-macros"
1054 gl_MANYWARN_COMPLEMENT([GNULIB_WARN_CFLAGS], [$WARN_CFLAGS], [$nw])
1056 AC_SUBST([WERROR_CFLAGS])
1057 AC_SUBST([GNULIB_WARN_CFLAGS])
1066 AC_ARG_ENABLE(link-time-optimization,
1067 [AS_HELP_STRING([--enable-link-time-optimization],
1068 [build with link-time optimization
1069 (experimental; see INSTALL)])],
1070 if test "${enableval}" != "no"; then
1072 if test "$emacs_cv_clang" = yes; then
1073 AC_MSG_CHECKING([whether link-time optimization is supported by clang])
1074 GOLD_PLUGIN=`$CC -print-file-name=LLVMgold.so 2>/dev/null`
1075 if test -x "$GOLD_PLUGIN"; then
1078 elif test x$GCC = xyes; then
1079 AC_MSG_CHECKING([whether link-time optimization is supported by gcc])
1080 CPUS=`getconf _NPROCESSORS_ONLN 2>/dev/null`
1081 if test x$CPUS != x; then
1087 AC_MSG_ERROR([Link-time optimization is not supported with your compiler.])
1089 if test -z "$LTO"; then
1093 CFLAGS="$CFLAGS $LTO"
1094 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
1095 [ac_lto_supported=yes], [ac_lto_supported=no])
1096 CFLAGS="$old_CFLAGS"
1098 AC_MSG_RESULT([$ac_lto_supported])
1099 if test "$ac_lto_supported" = "yes"; then
1100 CFLAGS="$CFLAGS $LTO"
1101 if test "$emacs_cv_clang" = yes; then
1102 AC_MSG_WARN([Please read INSTALL before using link-time optimization with clang])
1103 # WARNING: 'ar --plugin ...' doesn't work without
1104 # command, so plugin name is appended to ARFLAGS.
1105 ARFLAGS="cru --plugin $GOLD_PLUGIN"
1106 RANLIB="$RANLIB --plugin $GOLD_PLUGIN"
1108 dnl The following is needed for GCC 4.9.0. The GCC 4.9.0 release notes
1109 dnl suggest that instead of -ffat-lto-objects we should use gcc-ar and
1110 dnl gcc-ranlib in place of ar and ranlib, but gcc-ar makes /usr/bin/ar
1111 dnl dump core on Fedora 20, so play it safe for now.
1112 gl_COMPILER_OPTION_IF([-ffat-lto-objects],
1113 [CFLAGS="$CFLAGS -ffat-lto-objects"])
1119 dnl Automake replacements.
1120 AC_DEFUN([AM_CONDITIONAL],
1124 dnl Prefer silent make output. For verbose output, use
1125 dnl 'configure --disable-silent-rules' or 'make V=1' .
1126 dnl This code is adapted from Automake.
1127 dnl Although it can be simplified now that GNU Make is assumed,
1128 dnl the simplification hasn't been done yet.
1129 AC_ARG_ENABLE([silent-rules],
1131 [--disable-silent-rules],
1132 [verbose build output (undo: "make V=0")])])
1133 if test "$enable_silent_rules" = no; then
1134 AM_DEFAULT_VERBOSITY=1
1136 AM_DEFAULT_VERBOSITY=0
1139 AM_DEFAULT_V='$(AM_DEFAULT_VERBOSITY)'
1141 AC_SUBST([AM_DEFAULT_V])
1142 AC_SUBST([AM_DEFAULT_VERBOSITY])
1144 dnl Some other nice autoconf tests.
1146 dnl These are commented out, since gl_EARLY and/or Autoconf already does them.
1148 dnl if test "x$RANLIB" = x; then
1153 dnl Sadly, AC_PROG_LN_S is too restrictive. It also tests whether links
1154 dnl can be made to directories. This is not relevant for our usage, and
1155 dnl excludes some cases that work fine for us. Eg MS Windows or files
1156 dnl hosted on AFS, both examples where simple links work, but links to
1157 dnl directories fail. We use a cut-down version instead.
1160 AC_CACHE_CHECK([command to symlink files in the same directory], [emacs_cv_ln_s_fileonly],
1161 [rm -f conf$$ conf$$.file
1163 emacs_cv_ln_s_fileonly='cp -p'
1165 dnl On MinGW, ensure we will call the MSYS /bin/ln.exe, not some
1166 dnl random program in the current directory.
1167 if (echo >conf$$.file) 2>/dev/null; then
1168 if ln -s conf$$.file conf$$ 2>/dev/null; then
1169 if test "$opsys" = "mingw32"; then
1170 emacs_cv_ln_s_fileonly='/bin/ln -s'
1172 emacs_cv_ln_s_fileonly='ln -s'
1174 elif ln conf$$.file conf$$ 2>/dev/null; then
1175 if test "$opsys" = "mingw32"; then
1176 emacs_cv_ln_s_fileonly=/bin/ln
1178 emacs_cv_ln_s_fileonly=ln
1183 rm -f conf$$ conf$$.file])
1184 LN_S_FILEONLY=$emacs_cv_ln_s_fileonly
1186 AC_SUBST(LN_S_FILEONLY)
1189 dnl AC_PROG_LN_S sets LN_S to 'cp -pR' for MinGW, on the premise that 'ln'
1190 dnl doesn't support links to directories, as in "ln file dir". But that
1191 dnl use is non-portable, and OTOH MinGW wants to use hard links for Emacs
1192 dnl executables at "make install" time.
1193 dnl See https://lists.gnu.org/r/emacs-devel/2013-04/msg00475.html
1194 dnl for more details.
1195 if test "$opsys" = "mingw32"; then
1199 dnl On some Debian versions, "install-info" prints irritating messages
1200 dnl "This is not dpkg install-info anymore, but GNU install-info"
1201 dnl if called via an absolute file name.
1202 dnl Use the entirely-identical-but-quieter ginstall-info instead if present.
1203 dnl Sadly some people may have an old ginstall-info installed on
1204 dnl non-Debian systems, so we can't use this.
1205 dnl AC_PATH_PROGS(INSTALL_INFO, [ginstall-info install-info], :,
1206 dnl $PATH$PATH_SEPARATOR/usr/sbin$PATH_SEPARATOR/sbin)
1208 AC_PATH_PROG(INSTALL_INFO, install-info, :,
1209 $PATH$PATH_SEPARATOR/usr/sbin$PATH_SEPARATOR/sbin)
1210 dnl Don't use GZIP, which is used by gzip for additional parameters.
1211 AC_PATH_PROG(GZIP_PROG, gzip)
1213 test $with_compress_install != yes && test -n "$GZIP_PROG" && \
1214 GZIP_PROG=" # $GZIP_PROG # (disabled by configure --without-compress-install)"
1216 AC_CACHE_CHECK([for 'find' args to delete a file],
1217 [emacs_cv_find_delete],
1218 [if touch conftest.tmp && find conftest.tmp -delete 2>/dev/null &&
1219 test ! -f conftest.tmp
1220 then emacs_cv_find_delete="-delete"
1221 else emacs_cv_find_delete="-exec rm -f {} ';'"
1223 FIND_DELETE=$emacs_cv_find_delete
1224 AC_SUBST([FIND_DELETE])
1228 if test "$CANNOT_DUMP" != yes; then
1229 if test $opsys = gnu-linux; then
1230 if test "${SETFATTR+set}" != set; then
1231 AC_CACHE_CHECK([for setfattr],
1232 [emacs_cv_prog_setfattr],
1234 if (setfattr -n user.pax.flags conftest.tmp) >/dev/null 2>&1; then
1235 emacs_cv_prog_setfattr=yes
1237 emacs_cv_prog_setfattr=no
1239 if test "$emacs_cv_prog_setfattr" = yes; then
1240 PAXCTL_notdumped='$(SETFATTR) -n user.pax.flags -v er'
1246 AC_SUBST([SETFATTR])
1249 case $opsys,$PAXCTL_notdumped,$emacs_uname_r in
1250 gnu-linux,,* | netbsd,,[0-7].*)
1251 AC_PATH_PROG([PAXCTL], [paxctl], [],
1252 [$PATH$PATH_SEPARATOR/sbin$PATH_SEPARATOR/usr/sbin])
1253 if test -n "$PAXCTL"; then
1254 if test "$opsys" = netbsd; then
1255 PAXCTL_dumped='$(PAXCTL) +a'
1256 PAXCTL_notdumped=$PAXCTL_dumped
1258 AC_MSG_CHECKING([whether binaries have a PT_PAX_FLAGS header])
1259 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])],
1260 [if $PAXCTL -v conftest$EXEEXT >/dev/null 2>&1; then
1261 AC_MSG_RESULT([yes])
1266 if test -n "$PAXCTL"; then
1267 PAXCTL_dumped='$(PAXCTL) -zex'
1268 PAXCTL_notdumped='$(PAXCTL) -r'
1274 AC_SUBST([PAXCTL_dumped])
1275 AC_SUBST([PAXCTL_notdumped])
1277 # Makeinfo on macOS is ancient, check whether there is a more recent
1278 # version installed by Homebrew.
1279 AC_CHECK_PROGS(BREW, [brew])
1280 if test -n "$BREW"; then
1281 AC_PATH_PROG([MAKEINFO], [makeinfo], [],
1282 [`$BREW --prefix texinfo 2>/dev/null`/bin$PATH_SEPARATOR$PATH])
1285 ## Require makeinfo >= 4.13 (last of the 4.x series) to build the manuals.
1286 if test "${MAKEINFO:=makeinfo}" != "no"; then
1287 case `($MAKEINFO --version) 2>/dev/null` in
1288 *' (GNU texinfo) '4.1[[3-9]]* | \
1289 *' (GNU texinfo) '[[5-9]]* | \
1290 *' (GNU texinfo) '[[1-9][0-9]]* ) ;;
1295 ## Makeinfo is unusual. For a released Emacs, the manuals are
1296 ## pre-built, and not deleted by the normal clean rules. makeinfo is
1297 ## therefore in the category of "special tools" not normally required, which
1298 ## configure does not have to check for (eg autoconf itself).
1299 ## In a repository checkout on the other hand, the manuals are not included.
1300 ## So makeinfo is a requirement to build from the repository, and configure
1301 ## should test for it as it does for any other build requirement.
1302 ## We use the presence of $srcdir/info/emacs to distinguish a release,
1303 ## with pre-built manuals, from a repository checkout.
1306 if test "$MAKEINFO" = "no"; then
1308 if test "x${with_makeinfo}" = "xno"; then
1310 elif test ! -e "$srcdir/info/emacs" && test ! -e "$srcdir/info/emacs.info"; then
1311 AC_MSG_ERROR( [You do not seem to have makeinfo >= 4.13, and your
1312 source tree does not seem to have pre-built manuals in the 'info' directory.
1313 Either install a suitable version of makeinfo, or re-run configure
1314 with the '--without-makeinfo' option to build without the manuals.] )
1317 AC_SUBST([MAKEINFO])
1318 AC_SUBST(HAVE_MAKEINFO)
1320 if test $opsys = mingw32; then
1321 DOCMISC_W32=efaq-w32
1325 AC_SUBST(DOCMISC_W32)
1327 dnl Add our options to ac_link now, after it is set up.
1329 if test x$GCC = xyes; then
1330 test "x$GCC_LINK_TEST_OPTIONS" != x && \
1331 ac_link="$ac_link $GCC_LINK_TEST_OPTIONS"
1333 test "x$NON_GCC_LINK_TEST_OPTIONS" != x && \
1334 ac_link="$ac_link $NON_GCC_LINK_TEST_OPTIONS"
1337 AC_CACHE_CHECK([whether addresses are sanitized],
1338 [emacs_cv_sanitize_address],
1341 [[#ifndef __has_feature
1342 #define __has_feature(f) 0
1344 #if defined __SANITIZE_ADDRESS__ || __has_feature (address_sanitizer)
1346 error "Addresses are not sanitized.";
1349 [emacs_cv_sanitize_address=yes],
1350 [emacs_cv_sanitize_address=no])])
1352 dnl The function dump-emacs will not be defined and temacs will do
1353 dnl (load "loadup") automatically unless told otherwise.
1354 test "x$CANNOT_DUMP" = "x" && CANNOT_DUMP=no
1356 nacl) CANNOT_DUMP=yes ;;
1359 if test "$CANNOT_DUMP" = "yes"; then
1360 AC_DEFINE(CANNOT_DUMP, 1, [Define if Emacs cannot be dumped on your system.])
1361 elif test "$emacs_cv_sanitize_address" = yes; then
1362 AC_MSG_WARN([[Addresses are sanitized; suggest CANNOT_DUMP=yes]])
1365 AC_SUBST(CANNOT_DUMP)
1368 UNEXEC_OBJ=unexelf.o
1370 # MSDOS uses unexcoff.o
1372 UNEXEC_OBJ=unexaix.o
1378 UNEXEC_OBJ=unexmacosx.o
1381 UNEXEC_OBJ=unexhp9k800.o
1384 UNEXEC_OBJ=unexw32.o
1387 # Use the Solaris dldump() function, called from unexsol.c, to dump
1388 # emacs, instead of the generic ELF dump code found in unexelf.c.
1389 # The resulting binary has a complete symbol table, and is better
1390 # for debugging and other observability tools (debuggers, pstack, etc).
1392 # It is likely that dldump() works with older Solaris too, but this has
1393 # not been tested, so for now this change is for Solaris 10 or newer.
1394 UNEXEC_OBJ=unexsol.o
1397 test "$CANNOT_DUMP" = "yes" && UNEXEC_OBJ=
1402 ## Let 'ld' find image libs and similar things in /usr/local/lib.
1403 ## The system compiler, GCC, has apparently been modified to not
1404 ## look there, contrary to what a stock GCC would do.
1405 ### It's not our place to do this. See bug#10313#17.
1406 ### LD_SWITCH_SYSTEM=-L/usr/local/lib
1411 ## cpp test was "ifdef __mips__", but presumably this is equivalent...
1412 case $host_cpu in mips*) LD_SWITCH_SYSTEM="-G 0";; esac
1416 ### It's not our place to do this. See bug#10313#17.
1417 ### LD_SWITCH_SYSTEM="-Wl,-rpath,/usr/pkg/lib -L/usr/pkg/lib -Wl,-rpath,/usr/local/lib -L/usr/local/lib"
1422 ## Han Boetes <han@boetes.org> says this is necessary,
1423 ## otherwise Emacs dumps core on elf systems.
1424 LD_SWITCH_SYSTEM="-Z"
1427 AC_SUBST(LD_SWITCH_SYSTEM)
1429 ac_link="$ac_link $LD_SWITCH_SYSTEM"
1431 ## This setting of LD_SWITCH_SYSTEM references LD_SWITCH_X_SITE_RPATH,
1432 ## which has not been defined yet. When this was handled with cpp,
1433 ## it was expanded to null when configure sourced the s/*.h file.
1434 ## Thus LD_SWITCH_SYSTEM had different values in configure and the Makefiles.
1435 ## FIXME it would be cleaner to put this in LD_SWITCH_SYSTEM_TEMACS
1436 ## (or somesuch), but because it is supposed to go at the _front_
1437 ## of LD_SWITCH_SYSTEM, we cannot do that in exactly the same way.
1438 ## Compare with the gnu-linux case below, which added to the end
1439 ## of LD_SWITCH_SYSTEM, and so can instead go at the front of
1440 ## LD_SWITCH_SYSTEM_TEMACS.
1443 LD_SWITCH_SYSTEM="\$(LD_SWITCH_X_SITE_RPATH) $LD_SWITCH_SYSTEM" ;;
1450 AC_CHECK_DECL([__ELF__])
1451 if test "$ac_cv_have_decl___ELF__" = "yes"; then
1452 ## With ELF, make sure that all common symbols get allocated to in the
1453 ## data section. Otherwise, the dump of temacs may miss variables in
1454 ## the shared library that have been initialized. For example, with
1455 ## GNU libc, __malloc_initialized would normally be resolved to the
1456 ## shared library's .bss section, which is fatal.
1457 if test "x$GCC" = "xyes"; then
1458 C_SWITCH_MACHINE="-fno-common"
1460 AC_MSG_ERROR([Non-GCC compilers are not supported.])
1463 dnl This was the unexalpha.c case. Removed in 24.1, 2010-07-24,
1464 dnl albeit under the mistaken assumption that said file
1465 dnl was no longer used.
1466 AC_MSG_ERROR([Non-ELF systems are not supported since Emacs 24.1.])
1470 AC_SUBST(C_SWITCH_MACHINE)
1472 AC_SUBST(UNEXEC_OBJ)
1475 ## Some programs in src produce warnings saying certain subprograms
1476 ## are too complex and need a MAXMEM value greater than 2000 for
1477 ## additional optimization. --nils@exp-math.uni-essen.de
1478 test "$opsys" = "aix4.2" && test "x$GCC" != "xyes" && \
1479 C_SWITCH_SYSTEM="-ma -qmaxmem=4000"
1480 if test "$opsys" = "mingw32"; then
1481 case "$canonical" in
1482 x86_64-*-mingw*) C_SWITCH_SYSTEM="-mtune=generic" ;;
1483 *) C_SWITCH_SYSTEM="-mtune=pentium4" ;;
1486 ## gnu-linux might need -D_BSD_SOURCE on old libc5 systems.
1487 ## It is redundant in glibc2, since we define _GNU_SOURCE.
1488 AC_SUBST(C_SWITCH_SYSTEM)
1493 ## IBM's X11R5 uses -lIM and -liconv in AIX 3.2.2.
1494 aix4-2) LIBS_SYSTEM="-lrts -lIM -liconv" ;;
1496 freebsd|dragonfly) LIBS_SYSTEM="-lutil" ;;
1498 hpux*) LIBS_SYSTEM="-l:libdld.sl" ;;
1500 qnxnto) LIBS_SYSTEM="-lsocket" ;;
1502 sol2*) LIBS_SYSTEM="-lsocket -lnsl" ;;
1504 ## Motif needs -lgen.
1505 unixware) LIBS_SYSTEM="-lsocket -lnsl -lelf -lgen" ;;
1508 AC_SUBST(LIBS_SYSTEM)
1510 ### Make sure subsequent tests use flags consistent with the build flags.
1512 if test x"${OVERRIDE_CPPFLAGS}" != x; then
1513 CPPFLAGS="${OVERRIDE_CPPFLAGS}"
1515 CPPFLAGS="$C_SWITCH_SYSTEM $C_SWITCH_MACHINE $CPPFLAGS"
1518 # Suppress obsolescent Autoconf test for size_t; Emacs assumes C99 or better.
1519 AC_DEFUN([AC_TYPE_SIZE_T])
1520 # Likewise for obsolescent test for uid_t, gid_t; Emacs assumes them.
1521 AC_DEFUN([AC_TYPE_UID_T])
1523 # sqrt and other floating-point functions such as fmod and frexp
1524 # are found in -lm on many systems.
1526 AC_SEARCH_LIBS([sqrt], [m])
1527 if test "X$LIBS" = "X$OLD_LIBS"; then
1530 LIB_MATH=$ac_cv_search_sqrt
1534 dnl Current possibilities handled by sed (aix4-2 -> aix,
1535 dnl gnu-linux -> gnu/linux, etc.):
1536 dnl gnu, gnu/linux, gnu/kfreebsd, aix, cygwin, darwin, hpux.
1537 dnl And special cases: berkeley-unix, usg-unix-v, ms-dos, windows-nt.
1538 SYSTEM_TYPE=`echo $opsys | sed -e 's/[[0-9]].*//' -e 's|-|/|'`
1545 ## Adding -lm confuses the dynamic linker, so omit it.
1548 freebsd | dragonfly )
1549 SYSTEM_TYPE=berkeley-unix
1551 gnu-linux | gnu-kfreebsd )
1553 hpux10-20 | hpux11 )
1557 SYSTEM_TYPE=windows-nt
1559 dnl NB this may be adjusted below.
1561 SYSTEM_TYPE=berkeley-unix
1565 SYSTEM_TYPE=usg-unix-v
1571 AC_DEFINE_UNQUOTED(SYSTEM_TYPE, "$SYSTEM_TYPE",
1572 [The type of system you are compiling for; sets 'system-type'.])
1573 AC_SUBST([SYSTEM_TYPE])
1576 pre_PKG_CONFIG_CFLAGS=$CFLAGS
1577 pre_PKG_CONFIG_LIBS=$LIBS
1579 PKG_PROG_PKG_CONFIG(0.9.0)
1581 dnl EMACS_CHECK_MODULES(GSTUFF, gtk+-2.0 >= 1.3 glib = 1.3.4)
1582 dnl acts like PKG_CHECK_MODULES(GSTUFF, gtk+-2.0 >= 1.3 glib = 1.3.4,
1583 dnl HAVE_GSTUFF=yes, HAVE_GSTUFF=no) -- see pkg-config man page --
1584 dnl except that it postprocesses CFLAGS as needed for --enable-gcc-warnings.
1585 dnl EMACS_CHECK_MODULES accepts optional 3rd and 4th arguments that
1586 dnl can take the place of the default HAVE_GSTUFF=yes and HAVE_GSTUFF=no
1588 AC_DEFUN([EMACS_CHECK_MODULES],
1589 [PKG_CHECK_MODULES([$1], [$2],
1590 [$1_CFLAGS=`AS_ECHO(["$$1_CFLAGS"]) | sed -e "$edit_cflags"`
1591 m4_default([$3], [HAVE_$1=yes])],
1592 [m4_default([$4], [HAVE_$1=no])])])
1595 if test "${with_sound}" != "no"; then
1596 # Sound support for GNU/Linux, the free BSDs, MinGW, and Cygwin.
1597 AC_CHECK_HEADERS([machine/soundcard.h sys/soundcard.h soundcard.h mmsystem.h],
1598 have_sound_header=yes, [], [
1600 #define WIN32_LEAN_AND_MEAN
1601 #include <windows.h>
1604 test "${with_sound}" = "oss" && test "${have_sound_header}" != "yes" && \
1605 AC_MSG_ERROR([OSS sound support requested but not found.])
1607 if test "${with_sound}" = "bsd-ossaudio" || test "${with_sound}" = "yes"; then
1608 # Emulation library used on NetBSD.
1609 AC_CHECK_LIB(ossaudio, _oss_ioctl, LIBSOUND=-lossaudio, LIBSOUND=)
1610 test "${with_sound}" = "bsd-ossaudio" && test -z "$LIBSOUND" && \
1611 AC_MSG_ERROR([bsd-ossaudio sound support requested but not found.])
1612 dnl FIXME? If we did find ossaudio, should we set with_sound=bsd-ossaudio?
1613 dnl Traditionally, we go on to check for alsa too. Does that make sense?
1617 if test "${with_sound}" = "alsa" || test "${with_sound}" = "yes"; then
1619 ALSA_MODULES="alsa >= $ALSA_REQUIRED"
1620 EMACS_CHECK_MODULES([ALSA], [$ALSA_MODULES])
1621 if test $HAVE_ALSA = yes; then
1622 SAVE_CFLAGS="$CFLAGS"
1624 CFLAGS="$ALSA_CFLAGS $CFLAGS"
1625 LIBS="$ALSA_LIBS $LIBS"
1626 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <asoundlib.h>]], [[snd_lib_error_set_handler (0);]])],
1627 emacs_alsa_normal=yes,
1628 emacs_alsa_normal=no)
1629 if test "$emacs_alsa_normal" != yes; then
1630 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <alsa/asoundlib.h>]],
1631 [[snd_lib_error_set_handler (0);]])],
1632 emacs_alsa_subdir=yes,
1633 emacs_alsa_subdir=no)
1634 if test "$emacs_alsa_subdir" != yes; then
1635 AC_MSG_ERROR([pkg-config found alsa, but it does not compile. See config.log for error messages.])
1637 ALSA_CFLAGS="$ALSA_CFLAGS -DALSA_SUBDIR_INCLUDE"
1640 CFLAGS="$SAVE_CFLAGS"
1642 LIBSOUND="$LIBSOUND $ALSA_LIBS"
1643 CFLAGS_SOUND="$CFLAGS_SOUND $ALSA_CFLAGS"
1644 AC_DEFINE(HAVE_ALSA, 1, [Define to 1 if ALSA is available.])
1645 elif test "${with_sound}" = "alsa"; then
1646 AC_MSG_ERROR([ALSA sound support requested but not found.])
1648 fi dnl with_sound = alsa|yes
1650 dnl Define HAVE_SOUND if we have sound support. We know it works and
1651 dnl compiles only on the specified platforms. For others, it
1652 dnl probably doesn't make sense to try.
1653 dnl FIXME So surely we should bypass this whole section if not using
1654 dnl one of these platforms?
1655 if test x$have_sound_header = xyes || test $HAVE_ALSA = yes; then
1657 dnl defined __FreeBSD__ || defined __NetBSD__ || defined __linux__
1658 dnl Adjust the --with-sound help text if you change this.
1659 gnu-linux|freebsd|netbsd|mingw32|cygwin)
1660 AC_DEFINE(HAVE_SOUND, 1, [Define to 1 if you have sound support.])
1666 AC_SUBST(CFLAGS_SOUND)
1669 dnl checks for header files
1670 AC_CHECK_HEADERS_ONCE(
1677 sys/utsname.h pwd.h utmp.h util.h sys/prctl.h)
1679 AC_CACHE_CHECK([for ADDR_NO_RANDOMIZE],
1680 [emacs_cv_personality_addr_no_randomize],
1682 [AC_LANG_PROGRAM([[#include <sys/personality.h>]],
1683 [[personality (personality (0xffffffff)
1684 | ADDR_NO_RANDOMIZE)]])],
1685 [emacs_cv_personality_addr_no_randomize=yes],
1686 [emacs_cv_personality_addr_no_randomize=no])])
1687 if test $emacs_cv_personality_addr_no_randomize = yes; then
1688 AC_DEFINE([HAVE_PERSONALITY_ADDR_NO_RANDOMIZE], [1],
1689 [Define to 1 if personality flag ADDR_NO_RANDOMIZE exists.])
1692 # Note that Solaris has sys/sysinfo.h which defines struct
1693 # sysinfo as well. To make sure that we're using GNU/Linux
1694 # sysinfo, we explicitly set one of its fields.
1695 if test "$ac_cv_header_sys_sysinfo_h" = yes; then
1696 AC_CACHE_CHECK([if Linux sysinfo may be used], [emacs_cv_linux_sysinfo],
1697 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/sysinfo.h>]],
1698 [[struct sysinfo si;
1701 emacs_cv_linux_sysinfo=yes, emacs_cv_linux_sysinfo=no)])
1703 if test $emacs_cv_linux_sysinfo = yes; then
1704 AC_DEFINE([HAVE_LINUX_SYSINFO], 1, [Define to 1 if you have Linux sysinfo function.])
1705 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/sysinfo.h>]],
1706 [[struct sysinfo si; return si.mem_unit]])],
1707 AC_DEFINE(LINUX_SYSINFO_UNIT, 1,
1708 [Define to 1 if Linux sysinfo sizes are in multiples of mem_unit bytes.]))
1712 dnl On Solaris 8 there's a compilation warning for term.h because
1713 dnl it doesn't define 'bool'.
1714 AC_CHECK_HEADERS(term.h, , , -)
1716 AC_CHECK_DECLS([sys_siglist], [], [], [[#include <signal.h>
1718 if test $ac_cv_have_decl_sys_siglist != yes; then
1719 # For Tru64, at least:
1720 AC_CHECK_DECLS([__sys_siglist], [], [], [[#include <signal.h>
1725 AC_CHECK_HEADERS_ONCE(sys/socket.h)
1726 AC_CHECK_HEADERS(net/if.h, , , [AC_INCLUDES_DEFAULT
1727 #if HAVE_SYS_SOCKET_H
1728 #include <sys/socket.h>
1730 AC_CHECK_HEADERS(ifaddrs.h, , , [AC_INCLUDES_DEFAULT
1731 #if HAVE_SYS_SOCKET_H
1732 #include <sys/socket.h>
1734 AC_CHECK_HEADERS(net/if_dl.h, , , [AC_INCLUDES_DEFAULT
1735 #if HAVE_SYS_SOCKET_H
1736 #include <sys/socket.h>
1739 dnl checks for structure members
1740 AC_CHECK_MEMBERS([struct ifreq.ifr_flags, struct ifreq.ifr_hwaddr,
1741 struct ifreq.ifr_netmask, struct ifreq.ifr_broadaddr,
1742 struct ifreq.ifr_addr,
1743 struct ifreq.ifr_addr.sa_len], , ,
1744 [AC_INCLUDES_DEFAULT
1745 #if HAVE_SYS_SOCKET_H
1746 #include <sys/socket.h>
1752 dnl Check for endianness.
1753 dnl AC_C_BIGENDIAN is done by gnulib.
1755 dnl check for Make feature
1758 AUTODEPEND_PARENTS='lib src'
1759 dnl check if we have GCC and autodepend is on.
1760 if test "$GCC" = yes && test "$ac_enable_autodepend" = yes; then
1761 AC_CACHE_CHECK([whether gcc understands -MMD -MF], [emacs_cv_autodepend],
1762 [SAVE_CFLAGS="$CFLAGS"
1763 CFLAGS="$CFLAGS -MMD -MF deps.d -MP"
1764 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
1765 [emacs_cv_autodepend=yes], [emacs_cv_autodepend=no])
1766 CFLAGS="$SAVE_CFLAGS"
1767 test -f deps.d || emacs_cv_autodepend=no
1769 if test $emacs_cv_autodepend = yes; then
1773 AC_SUBST(AUTO_DEPEND)
1775 #### Choose a window system.
1777 ## We leave window_system equal to none if
1778 ## we end up building without one. Any new window system should
1779 ## set window_system to an appropriate value and add objects to
1780 ## window-system-specific substs.
1784 if test "$no_x" != yes; then
1788 LD_SWITCH_X_SITE_RPATH=
1789 if test "${x_libraries}" != NONE; then
1790 if test -n "${x_libraries}"; then
1791 LD_SWITCH_X_SITE=-L`AS_ECHO(["$x_libraries"]) | sed -e 's/:/ -L/g'`
1792 LD_SWITCH_X_SITE_RPATH=-Wl,-rpath,`
1793 AS_ECHO(["$x_libraries"]) | sed -e 's/:/ -Wl,-rpath,/g'
1796 x_default_search_path=""
1797 x_search_path=${x_libraries}
1798 if test -z "${x_search_path}"; then
1799 x_search_path=/usr/lib
1801 for x_library in `AS_ECHO(["$x_search_path:"]) | \
1802 sed -e "s/:/ /g" -e p -e "s:/lib[[^ /]]* :/share :g"`; do
1804 ${x_library}/X11/%L/%T/%N%C%S:\
1805 ${x_library}/X11/%l/%T/%N%C%S:\
1806 ${x_library}/X11/%T/%N%C%S:\
1807 ${x_library}/X11/%L/%T/%N%S:\
1808 ${x_library}/X11/%l/%T/%N%S:\
1809 ${x_library}/X11/%T/%N%S"
1810 if test x"${x_default_search_path}" = x; then
1811 x_default_search_path=${x_search_path}
1813 x_default_search_path="${x_search_path}:${x_default_search_path}"
1817 AC_SUBST(LD_SWITCH_X_SITE_RPATH)
1819 if test "${x_includes}" != NONE && test -n "${x_includes}"; then
1820 C_SWITCH_X_SITE=$isystem`AS_ECHO(["$x_includes"]) | sed -e "s/:/ $isystem/g"`
1823 if test x"${x_includes}" = x; then
1824 bitmapdir=/usr/include/X11/bitmaps
1826 # accumulate include directories that have X11 bitmap subdirectories
1828 for bmd in `AS_ECHO(["$x_includes"]) | sed -e 's/:/ /g'`; do
1829 if test -d "${bmd}/X11/bitmaps"; then
1830 bmd_acc="${bmd_acc}:${bmd}/X11/bitmaps"
1832 if test -d "${bmd}/bitmaps"; then
1833 bmd_acc="${bmd_acc}:${bmd}/bitmaps"
1836 bitmapdir=${bmd_acc#:}
1839 test "${with_ns}" = maybe && test "${opsys}" != darwin && with_ns=no
1841 NS_GNUSTEP_CONFIG=no
1844 tmp_CPPFLAGS="$CPPFLAGS"
1845 tmp_CFLAGS="$CFLAGS"
1846 CPPFLAGS="$CPPFLAGS -x objective-c"
1847 CFLAGS="$CFLAGS -x objective-c"
1850 if test "${with_ns}" != no; then
1851 if test "${opsys}" = darwin; then
1853 ns_appdir=`pwd`/nextstep/Emacs.app
1854 ns_appbindir=${ns_appdir}/Contents/MacOS
1855 ns_appresdir=${ns_appdir}/Contents/Resources
1856 ns_appsrc=Cocoa/Emacs.base
1857 ns_fontfile=macfont.o
1858 elif flags=$( (gnustep-config --objc-flags) 2>/dev/null); then
1860 NS_GNUSTEP_CONFIG=yes
1861 GNU_OBJC_CFLAGS=$flags
1862 LIBS_GNUSTEP=$(gnustep-config --gui-libs) || exit
1863 elif test -f $GNUSTEP_CONFIG_FILE; then
1865 dnl FIXME sourcing this several times in subshells seems inefficient.
1866 GNUSTEP_SYSTEM_HEADERS=$(
1867 . $GNUSTEP_CONFIG_FILE
1868 AS_ECHO(["$GNUSTEP_SYSTEM_HEADERS"])
1870 GNUSTEP_SYSTEM_LIBRARIES=$(
1871 . $GNUSTEP_CONFIG_FILE
1872 AS_ECHO(["$GNUSTEP_SYSTEM_LIBRARIES"])
1874 dnl I seemed to need these as well with GNUstep-startup 0.25.
1875 GNUSTEP_LOCAL_HEADERS=$(
1876 . $GNUSTEP_CONFIG_FILE
1877 AS_ECHO(["$GNUSTEP_LOCAL_HEADERS"])
1879 GNUSTEP_LOCAL_LIBRARIES=$(
1880 . $GNUSTEP_CONFIG_FILE
1881 AS_ECHO(["$GNUSTEP_LOCAL_LIBRARIES"])
1883 test "x${GNUSTEP_LOCAL_HEADERS}" != "x" && \
1884 GNUSTEP_LOCAL_HEADERS="-I${GNUSTEP_LOCAL_HEADERS}"
1885 test "x${GNUSTEP_LOCAL_LIBRARIES}" != "x" && \
1886 GNUSTEP_LOCAL_LIBRARIES="-L${GNUSTEP_LOCAL_LIBRARIES}"
1887 CPPFLAGS="$CPPFLAGS -I${GNUSTEP_SYSTEM_HEADERS} ${GNUSTEP_LOCAL_HEADERS}"
1888 CFLAGS="$CFLAGS -I${GNUSTEP_SYSTEM_HEADERS} ${GNUSTEP_LOCAL_HEADERS}"
1889 LDFLAGS="$LDFLAGS -L${GNUSTEP_SYSTEM_LIBRARIES} ${GNUSTEP_LOCAL_LIBRARIES}"
1890 LIBS_GNUSTEP="-lgnustep-gui -lgnustep-base -lobjc -lpthread"
1891 dnl GNUstep defines BASE_NATIVE_OBJC_EXCEPTIONS to 0 or 1.
1892 dnl If they had chosen to either define it or not, we could have
1893 dnl just used AC_CHECK_DECL here.
1894 AC_CACHE_CHECK(if GNUstep defines BASE_NATIVE_OBJC_EXCEPTIONS,
1895 emacs_cv_objc_exceptions,
1896 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <GNUstepBase/GSConfig.h>]],
1897 [[#if defined BASE_NATIVE_OBJC_EXCEPTIONS && BASE_NATIVE_OBJC_EXCEPTIONS > 0
1901 #endif]])], emacs_cv_objc_exceptions=yes, emacs_cv_objc_exceptions=no ) )
1902 if test $emacs_cv_objc_exceptions = yes; then
1903 dnl _NATIVE_OBJC_EXCEPTIONS is used by the GNUstep headers.
1904 AC_DEFINE(_NATIVE_OBJC_EXCEPTIONS, 1,
1905 [Define if GNUstep uses ObjC exceptions.])
1906 GNU_OBJC_CFLAGS="-fobjc-exceptions"
1909 if test $NS_IMPL_GNUSTEP = yes; then
1910 ns_appdir=`pwd`/nextstep/Emacs.app
1911 ns_appbindir=${ns_appdir}
1912 ns_appresdir=${ns_appdir}/Resources
1913 ns_appsrc=GNUstep/Emacs.base
1914 ns_fontfile=nsfont.o
1917 dnl This is only used while we test the NS headers, it gets reset below.
1918 CPPFLAGS="$CPPFLAGS $GNU_OBJC_CFLAGS"
1919 CFLAGS="$CFLAGS $GNU_OBJC_CFLAGS"
1921 AC_CHECK_HEADER([AppKit/AppKit.h], [HAVE_NS=yes],
1922 [AC_MSG_ERROR([The include files (AppKit/AppKit.h etc) that
1923 are required for a Nextstep build are missing or cannot be compiled.
1924 Either fix this, or re-configure with the option '--without-ns'.])])
1927 if test "${NS_IMPL_COCOA}" = "yes"; then
1928 AC_MSG_CHECKING([for Mac OS X 10.6 or newer])
1929 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <AppKit/AppKit.h>],
1931 #ifdef MAC_OS_X_VERSION_MAX_ALLOWED
1932 #if MAC_OS_X_VERSION_MAX_ALLOWED >= 1060
1935 error "Mac OS X 10.6 or newer required";
1939 ns_osx_have_106=yes,
1941 AC_MSG_RESULT([$ns_osx_have_106])
1943 if test $ns_osx_have_106 = no; then
1944 AC_MSG_ERROR([Mac OS X 10.6 or newer is required]);
1949 AC_SUBST(LIBS_GNUSTEP)
1951 INSTALL_ARCH_INDEP_EXTRA=install-etc
1952 ns_self_contained=no
1955 if test "${HAVE_NS}" = yes; then
1956 if test "$with_toolkit_scroll_bars" = "no"; then
1957 AC_MSG_ERROR([Non-toolkit scroll bars are not implemented for Nextstep.])
1960 window_system=nextstep
1961 # set up packaging dirs
1962 if test "${EN_NS_SELF_CONTAINED}" = yes; then
1963 ns_self_contained=yes
1964 prefix=${ns_appresdir}
1965 exec_prefix=${ns_appbindir}
1966 dnl This one isn't really used, only archlibdir is.
1967 libexecdir="\${ns_appbindir}/libexec"
1968 archlibdir="\${ns_appbindir}/libexec"
1969 etcdocdir="\${ns_appresdir}/etc"
1970 etcdir="\${ns_appresdir}/etc"
1971 dnl FIXME maybe set datarootdir instead.
1972 dnl That would also get applications, icons, man.
1973 infodir="\${ns_appresdir}/info"
1974 mandir="\${ns_appresdir}/man"
1975 lispdir="\${ns_appresdir}/lisp"
1976 test "$locallisppathset" = no && locallisppath=""
1977 INSTALL_ARCH_INDEP_EXTRA=
1980 NS_OBJC_OBJ="nsterm.o nsfns.o nsmenu.o nsselect.o nsimage.o $ns_fontfile"
1982 CFLAGS="$tmp_CFLAGS"
1983 CPPFLAGS="$tmp_CPPFLAGS"
1984 AC_SUBST(INSTALL_ARCH_INDEP_EXTRA)
1985 AC_SUBST(ns_self_contained)
1987 AC_SUBST(NS_OBJC_OBJ)
1989 if test "${HAVE_NS}" = yes; then
1991 [if the Objective C compiler supports instancetype],
1992 [emacs_cv_objc_instancetype],
1993 [AC_LANG_PUSH([Objective C])
1995 [AC_LANG_SOURCE([[@interface Test
1996 + (instancetype)test;
1998 emacs_cv_objc_instancetype=yes,
1999 emacs_cv_objc_instancetype=no)
2000 AC_LANG_POP([Objective C])])
2002 if test x$emacs_cv_objc_instancetype = xyes ; then
2003 AC_DEFINE(NATIVE_OBJC_INSTANCETYPE, 1,
2004 [Define if ObjC compiler supports instancetype natively.])
2016 if test "${with_w32}" != no; then
2019 AC_CHECK_HEADER([windows.h], [HAVE_W32=yes],
2020 [AC_MSG_ERROR(['--with-w32' was specified, but windows.h
2021 cannot be found.])])
2024 ## Using --with-w32 with MinGW is a no-op, but we allow it.
2027 AC_MSG_ERROR([Using w32 with an autotools build is only supported for Cygwin and MinGW32.])
2032 if test "${opsys}" = "mingw32"; then
2033 AC_CACHE_CHECK([whether Windows API headers are recent enough], [emacs_cv_w32api],
2034 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
2035 #include <windows.h>
2036 #include <usp10.h>]],
2037 [[PIMAGE_NT_HEADERS pHeader;
2038 PIMAGE_SECTION_HEADER pSection = IMAGE_FIRST_SECTION(pHeader)]])],
2039 [emacs_cv_w32api=yes], [emacs_cv_w32api=no])])
2040 if test "${emacs_cv_w32api}" = "no"; then
2041 AC_MSG_ERROR([the Windows API headers are too old to support this build.])
2043 HAVE_W32=${emacs_cv_w32api}
2053 if test "${HAVE_W32}" = "yes"; then
2054 AC_DEFINE(HAVE_NTGUI, 1, [Define to use native MS Windows GUI.])
2055 if test "$with_toolkit_scroll_bars" = "no"; then
2056 AC_MSG_ERROR([Non-toolkit scroll bars are not implemented for w32 build.])
2058 AC_CHECK_TOOL(WINDRES, [windres],
2059 [AC_MSG_ERROR([No resource compiler found.])])
2060 W32_OBJ="w32fns.o w32menu.o w32reg.o w32font.o w32term.o"
2061 W32_OBJ="$W32_OBJ w32xfns.o w32select.o w32uniscribe.o w32cygwinx.o"
2062 EMACSRES="emacs.res"
2063 case "$canonical" in
2064 x86_64-*-*) EMACS_MANIFEST="emacs-x64.manifest" ;;
2065 *) EMACS_MANIFEST="emacs-x86.manifest" ;;
2067 dnl Construct something of the form "24,4,0,0" with 4 components.
2068 comma_version=`echo "${PACKAGE_VERSION}.0.0" | sed -e 's/\./,/g' -e 's/^\([[^,]]*,[[^,]]*,[[^,]]*,[[^,]]*\).*/\1/'`
2070 comma_space_version=`echo "$comma_version" | sed 's/,/, /g'`
2071 AC_SUBST(comma_version)
2072 AC_SUBST(comma_space_version)
2073 AC_CONFIG_FILES([nt/emacs.rc nt/emacsclient.rc])
2074 if test "${opsys}" = "cygwin"; then
2075 W32_LIBS="$W32_LIBS -lkernel32 -luser32 -lusp10 -lgdi32"
2076 W32_LIBS="$W32_LIBS -lole32 -lcomdlg32 -lcomctl32 -lwinspool"
2077 # Tell the linker that emacs.res is an object (which we compile from
2078 # the rc file), not a linker script.
2079 W32_RES_LINK="-Wl,emacs.res"
2081 W32_OBJ="$W32_OBJ w32.o w32console.o w32heap.o w32inevt.o w32proc.o"
2082 W32_LIBS="$W32_LIBS -lwinmm -lusp10 -lgdi32 -lcomdlg32"
2083 W32_LIBS="$W32_LIBS -lmpr -lwinspool -lole32 -lcomctl32"
2084 W32_RES_LINK="\$(EMACSRES)"
2085 CLIENTRES="emacsclient.res"
2086 CLIENTW="emacsclientw\$(EXEEXT)"
2087 FIRSTFILE_OBJ=firstfile.o
2090 LIBS_ECLIENT="-lcomctl32"
2091 LIB_WSOCK32="-lwsock32"
2092 NTLIB="ntlib.$ac_objext"
2093 XARGS_LIMIT="-s 10000"
2097 if test "${HAVE_W32}" = "no" && test "${opsys}" = "cygwin"; then
2098 W32_LIBS="-lkernel32"
2099 W32_OBJ="w32cygwinx.o"
2105 AC_SUBST(EMACS_MANIFEST)
2108 AC_SUBST(W32_RES_LINK)
2109 AC_SUBST(FIRSTFILE_OBJ)
2112 AC_SUBST(LIBS_ECLIENT)
2113 AC_SUBST(LIB_WSOCK32)
2115 AC_SUBST(XARGS_LIMIT)
2117 if test "${HAVE_W32}" = "yes"; then
2122 ## $window_system is now set to the window system we will
2130 case "${window_system}" in
2135 case "${with_x_toolkit}" in
2136 athena | lucid ) USE_X_TOOLKIT=LUCID ;;
2137 motif ) USE_X_TOOLKIT=MOTIF ;;
2139 term_header=gtkutil.h
2140 dnl Don't set this for GTK. A lot of tests below assumes Xt when
2141 dnl USE_X_TOOLKIT is set.
2142 USE_X_TOOLKIT=none ;;
2143 gtk2 ) with_gtk2=yes
2144 term_header=gtkutil.h
2145 USE_X_TOOLKIT=none ;;
2146 gtk3 ) with_gtk3=yes
2147 term_header=gtkutil.h
2148 USE_X_TOOLKIT=none ;;
2149 no ) USE_X_TOOLKIT=none ;;
2150 dnl If user did not say whether to use a toolkit, make this decision later:
2151 dnl use the toolkit if we have gtk, or X11R5 or newer.
2152 * ) USE_X_TOOLKIT=maybe ;;
2156 term_header=nsterm.h
2159 term_header=w32term.h
2163 if test "$window_system" = none && test "X$with_x" != "Xno"; then
2164 AC_CHECK_PROG(HAVE_XSERVER, X, true, false)
2165 if test "$HAVE_XSERVER" = true ||
2166 test -n "$DISPLAY" ||
2168 for emacs_libX11 in /usr/lib/libX11.*; do break; done
2169 test "$emacs_libX11" != '/usr/lib/libX11.*'
2172 AC_MSG_ERROR([You seem to be running X, but no X development libraries
2173 were found. You should install the relevant development files for X
2174 and for the toolkit you want, such as Gtk+ or Motif. Also make
2175 sure you have development files for image handling, i.e.
2176 tiff, gif, jpeg, png and xpm.
2177 If you are sure you want Emacs compiled without X window support, pass
2183 # Does the opsystem file prohibit the use of the GNU malloc?
2184 # Assume not, until told otherwise.
2188 [whether malloc is Doug Lea style],
2189 [emacs_cv_var_doug_lea_malloc],
2190 [emacs_cv_var_doug_lea_malloc=no
2191 dnl Hooks do not work with address sanitization.
2192 if test "$emacs_cv_sanitize_address" != yes; then
2195 [[#include <malloc.h>
2196 static void hook (void) {}]],
2197 [[malloc_set_state (malloc_get_state ());
2198 __after_morecore_hook = hook;
2199 __malloc_initialize_hook = hook;]])],
2200 [emacs_cv_var_doug_lea_malloc=yes])
2202 doug_lea_malloc=$emacs_cv_var_doug_lea_malloc
2207 test "$CANNOT_DUMP" = yes ||
2209 ## darwin ld insists on the use of malloc routines in the System framework.
2210 darwin | mingw32 | nacl | sol2-10) ;;
2211 cygwin | qnxnto | freebsd)
2214 *) test "$ac_cv_func_sbrk" = yes && system_malloc=$emacs_cv_sanitize_address;;
2217 if test "${system_malloc}" != yes && test "${doug_lea_malloc}" != yes \
2218 && test "${UNEXEC_OBJ}" = unexelf.o; then
2224 if test "${system_malloc}" = "yes"; then
2225 AC_DEFINE([SYSTEM_MALLOC], 1,
2226 [Define to 1 to use the system memory allocator, even if it is not
2230 (The GNU allocators don't work with this system configuration.)"
2232 elif test "$hybrid_malloc" = yes; then
2233 AC_DEFINE(HYBRID_MALLOC, 1,
2234 [Define to use gmalloc before dumping and the system malloc after.])
2237 GNU_MALLOC_reason=" (only before dumping)"
2238 GMALLOC_OBJ=gmalloc.o
2241 test "$doug_lea_malloc" != "yes" && GMALLOC_OBJ=gmalloc.o
2242 VMLIMIT_OBJ=vm-limit.o
2244 AC_CHECK_HEADERS([sys/vlimit.h])
2245 AC_CACHE_CHECK([for data_start], [emacs_cv_data_start],
2248 [[extern char data_start[]; char ch;]],
2249 [[return data_start < &ch;]])],
2250 [emacs_cv_data_start=yes],
2251 [emacs_cv_data_start=no])])
2252 if test $emacs_cv_data_start = yes; then
2253 AC_DEFINE([HAVE_DATA_START], 1,
2254 [Define to 1 if data_start is the address of the start
2255 of the main data segment.])
2258 AC_SUBST([HYBRID_MALLOC])
2259 AC_SUBST(GMALLOC_OBJ)
2260 AC_SUBST(VMLIMIT_OBJ)
2262 if test "$doug_lea_malloc" = "yes" && test "$hybrid_malloc" != yes; then
2263 if test "$GNU_MALLOC" = yes ; then
2265 (Using Doug Lea's new malloc from the GNU C Library.)"
2267 AC_DEFINE(DOUG_LEA_MALLOC, 1,
2268 [Define to 1 if the system memory allocator is Doug Lea style,
2269 with malloc hooks and malloc_set_state.])
2271 ## Use mmap directly for allocating larger buffers.
2272 ## FIXME this comes from src/s/{gnu,gnu-linux}.h:
2273 ## #ifdef DOUG_LEA_MALLOC; #undef REL_ALLOC; #endif
2274 ## Does the AC_FUNC_MMAP test below make this check unnecessary?
2276 mingw32|gnu*) REL_ALLOC=no ;;
2280 if test x"${REL_ALLOC}" = x; then
2281 REL_ALLOC=${GNU_MALLOC}
2284 use_mmap_for_buffers=no
2286 mingw32) use_mmap_for_buffers=yes ;;
2290 if test $use_mmap_for_buffers = yes; then
2291 AC_DEFINE(USE_MMAP_FOR_BUFFERS, 1, [Define to use mmap to allocate buffer text.])
2295 LIBS="$LIBS_SYSTEM $LIBS"
2297 dnl FIXME replace main with a function we actually want from this library.
2298 AC_CHECK_LIB(Xbsd, main, LD_SWITCH_X_SITE="$LD_SWITCH_X_SITE -lXbsd")
2300 dnl Check for the POSIX thread library.
2302 AC_CHECK_HEADERS_ONCE(pthread.h)
2303 if test "$ac_cv_header_pthread_h" && test "$opsys" != "mingw32"; then
2304 AC_CACHE_CHECK([for pthread library],
2305 [emacs_cv_pthread_lib],
2306 [emacs_cv_pthread_lib=no
2308 for emacs_pthread_lib in 'none needed' -lpthread; do
2309 case $emacs_pthread_lib in
2310 -*) LIBS="$OLD_LIBS $emacs_pthread_lib";;
2314 [[#include <pthread.h>
2316 sigset_t old_mask, new_mask;
2317 void noop (void) {}]],
2318 [[pthread_t th = pthread_self ();
2320 status += pthread_create (&th, 0, 0, 0);
2321 status += pthread_sigmask (SIG_BLOCK, &new_mask, &old_mask);
2322 status += pthread_kill (th, 0);
2323 #if ! (defined SYSTEM_MALLOC || defined HYBRID_MALLOC \
2324 || defined DOUG_LEA_MALLOC)
2325 /* Test for pthread_atfork only if gmalloc uses it,
2326 as older-style hosts like MirBSD 10 lack it. */
2327 status += pthread_atfork (noop, noop, noop);
2330 [emacs_cv_pthread_lib=$emacs_pthread_lib])
2332 if test "$emacs_cv_pthread_lib" != no; then
2336 if test "$emacs_cv_pthread_lib" != no; then
2337 AC_DEFINE([HAVE_PTHREAD], 1, [Define to 1 if you have POSIX threads.])
2338 case $emacs_cv_pthread_lib in
2339 -*) LIB_PTHREAD=$emacs_cv_pthread_lib;;
2341 ac_cv_func_pthread_sigmask=yes
2342 # Some systems optimize for single-threaded programs by default, and
2343 # need special flags to disable these optimizations. For example, the
2344 # definition of 'errno' in <errno.h>.
2347 AC_DEFINE([_REENTRANT], 1,
2348 [Define to 1 if your system requires this in multithreaded code.]);;
2350 AC_DEFINE([_THREAD_SAFE], 1,
2351 [Define to 1 if your system requires this in multithreaded code.]);;
2355 AC_SUBST([LIB_PTHREAD])
2357 AC_MSG_CHECKING([for thread support])
2359 if test "$with_threads" = yes; then
2360 if test "$emacs_cv_pthread_lib" != no; then
2361 AC_DEFINE(THREADS_ENABLED, 1,
2362 [Define to 1 if you want elisp thread support.])
2364 elif test "${opsys}" = "mingw32"; then
2365 dnl MinGW can do native Windows threads even without pthreads
2366 AC_DEFINE(THREADS_ENABLED, 1,
2367 [Define to 1 if you want elisp thread support.])
2371 AC_MSG_RESULT([$threads_enabled])
2373 dnl Check for need for bigtoc support on IBM AIX
2377 AC_CACHE_CHECK([for -bbigtoc option], [gdb_cv_bigtoc], [
2379 yes) gdb_cv_bigtoc=-Wl,-bbigtoc ;;
2380 *) gdb_cv_bigtoc=-bbigtoc ;;
2383 LDFLAGS=$LDFLAGS\ $gdb_cv_bigtoc
2384 AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[int i;]])], [], [gdb_cv_bigtoc=])
2389 # Change CFLAGS, CPPFLAGS, and LIBS temporarily so that C_SWITCH_X_SITE
2390 # is for the tests that follow. We set them back later on.
2392 REAL_CFLAGS="$CFLAGS"
2393 REAL_CPPFLAGS="$CPPFLAGS"
2396 if test "${HAVE_X11}" = "yes"; then
2397 DEFS="$C_SWITCH_X_SITE $DEFS"
2398 LDFLAGS="$LDFLAGS $LD_SWITCH_X_SITE"
2400 CFLAGS="$C_SWITCH_X_SITE $CFLAGS"
2401 CPPFLAGS="$C_SWITCH_X_SITE $CPPFLAGS"
2403 # On Solaris, arrange for LD_RUN_PATH to point to the X libraries for tests.
2404 # This is handled by LD_SWITCH_X_SITE_RPATH during the real build,
2405 # but it's more convenient here to set LD_RUN_PATH since this
2406 # also works on hosts that don't understand LD_SWITCH_X_SITE_RPATH.
2407 if test "${x_libraries}" != NONE && test -n "${x_libraries}"; then
2408 LD_RUN_PATH=$x_libraries${LD_RUN_PATH+:}$LD_RUN_PATH
2412 if test "${opsys}" = "gnu-linux"; then
2413 AC_CACHE_CHECK([whether X on GNU/Linux needs -b to link], [emacs_cv_b_link],
2414 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],
2415 [[XOpenDisplay ("foo");]])],
2416 [xgnu_linux_first_failure=no],
2417 [xgnu_linux_first_failure=yes])
2418 if test "${xgnu_linux_first_failure}" = "yes"; then
2419 OLD_CPPFLAGS="$CPPFLAGS"
2421 CPPFLAGS="$CPPFLAGS -b i486-linuxaout"
2422 LIBS="$LIBS -b i486-linuxaout"
2423 AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],
2424 [[XOpenDisplay ("foo");]])],
2425 [xgnu_linux_second_failure=no],
2426 [xgnu_linux_second_failure=yes])
2427 if test "${xgnu_linux_second_failure}" = "yes"; then
2428 # If we get the same failure with -b, there is no use adding -b.
2429 # So leave it out. This plays safe.
2434 CPPFLAGS=$OLD_CPPFLAGS
2439 if test "x$emacs_cv_b_link" = xyes ; then
2440 LD_SWITCH_X_SITE="$LD_SWITCH_X_SITE -b i486-linuxaout"
2441 C_SWITCH_X_SITE="$C_SWITCH_X_SITE -b i486-linuxaout"
2445 # Reportedly, some broken Solaris systems have XKBlib.h but are missing
2446 # header files included from there.
2447 AC_CACHE_CHECK([for Xkb], [emacs_cv_xkb],
2448 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Xlib.h>
2449 #include <X11/XKBlib.h>]],
2450 [[XkbDescPtr kb = XkbGetKeyboard (0, XkbAllComponentsMask, XkbUseCoreKbd);]])],
2451 emacs_cv_xkb=yes, emacs_cv_xkb=no)])
2452 if test $emacs_cv_xkb = yes; then
2453 AC_DEFINE(HAVE_XKB, 1, [Define to 1 if you have the Xkb extension.])
2456 AC_CHECK_FUNCS(XrmSetDatabase XScreenResourceString \
2457 XScreenNumberOfScreen)
2460 if test "${window_system}" = "x11"; then
2461 AC_MSG_CHECKING(X11 version 6)
2462 AC_CACHE_VAL(emacs_cv_x11_version_6,
2463 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Xlib.h>]],
2464 [[#if XlibSpecificationRelease < 6
2467 ]])], emacs_cv_x11_version_6=yes, emacs_cv_x11_version_6=no)])
2468 if test $emacs_cv_x11_version_6 = yes; then
2469 AC_MSG_RESULT(6 or newer)
2470 AC_DEFINE(HAVE_X11R6, 1,
2471 [Define to 1 if you have the X11R6 or newer version of Xlib.])
2472 AC_DEFINE(HAVE_X_I18N, 1, [Define if you have usable i18n support.])
2473 ## inoue@ainet.or.jp says Solaris has a bug related to X11R6-style
2477 *) AC_DEFINE(HAVE_X11R6_XIM, 1,
2478 [Define if you have usable X11R6-style XIM support.])
2482 AC_MSG_RESULT(before 6)
2487 ### Use -lrsvg-2 if available, unless '--with-rsvg=no' is specified.
2489 if test "${HAVE_X11}" = "yes" || test "${HAVE_NS}" = "yes" || test "${opsys}" = "mingw32"; then
2490 if test "${with_rsvg}" != "no"; then
2491 RSVG_REQUIRED=2.11.0
2492 RSVG_MODULE="librsvg-2.0 >= $RSVG_REQUIRED"
2494 EMACS_CHECK_MODULES([RSVG], [$RSVG_MODULE])
2495 AC_SUBST(RSVG_CFLAGS)
2498 if test $HAVE_RSVG = yes; then
2499 AC_DEFINE(HAVE_RSVG, 1, [Define to 1 if using librsvg.])
2500 CFLAGS="$CFLAGS $RSVG_CFLAGS"
2501 # Windows loads librsvg dynamically
2502 if test "${opsys}" = "mingw32"; then
2510 if test "${HAVE_X11}" = "yes" || test "${HAVE_NS}" = "yes" || test "${HAVE_W32}" = "yes"; then
2511 if test "${with_imagemagick}" != "no"; then
2512 if test -n "$BREW"; then
2513 # Homebrew doesn't link ImageMagick 6 by default, so make sure
2514 # pkgconfig can find it.
2515 export PKG_CONFIG_PATH="$PKG_CONFIG_PATH$PATH_SEPARATOR`$BREW --prefix imagemagick@6 2>/dev/null`/lib/pkgconfig"
2518 ## 6.3.5 is the earliest version known to work; see Bug#17339.
2519 ## 6.8.2 makes Emacs crash; see Bug#13867.
2520 ## 7 and later have not been ported to; See Bug#25967.
2521 IMAGEMAGICK_MODULE="Wand >= 6.3.5 Wand != 6.8.2 Wand < 7"
2522 EMACS_CHECK_MODULES([IMAGEMAGICK], [$IMAGEMAGICK_MODULE])
2524 if test $HAVE_IMAGEMAGICK = yes; then
2527 CFLAGS="$CFLAGS $IMAGEMAGICK_CFLAGS"
2528 LIBS="$IMAGEMAGICK_LIBS $LIBS"
2529 AC_CHECK_FUNCS([MagickRelinquishMemory MagickExportImagePixels \
2530 MagickMergeImageLayers MagickAutoOrientImage])
2533 # Check that ImageMagick links. It does not link on Fedora 25
2534 # with './configure CC=clang', as pkg-config outputs flags like
2535 # -lomp that work for GCC but not Clang.
2536 if test "$ac_cv_func_MagickRelinquishMemory" != yes; then
2540 if test $HAVE_IMAGEMAGICK = yes; then
2541 AC_DEFINE([HAVE_IMAGEMAGICK], 1, [Define to 1 if using ImageMagick.])
2546 AC_SUBST([IMAGEMAGICK_CFLAGS])
2547 AC_SUBST([IMAGEMAGICK_LIBS])
2551 AC_CHECK_LIB(anl, getaddrinfo_a, HAVE_GETADDRINFO_A=yes)
2552 if test "${HAVE_GETADDRINFO_A}" = "yes"; then
2553 AC_DEFINE(HAVE_GETADDRINFO_A, 1,
2554 [Define to 1 if you have getaddrinfo_a for asynchronous DNS resolution.])
2555 GETADDRINFO_A_LIBS="-lanl"
2556 AC_SUBST(GETADDRINFO_A_LIBS)
2561 gtk_term_header=$term_header
2564 if test "${opsys}" != "mingw32"; then
2565 if test "${with_gtk3}" = "yes" || test "${with_gtk}" = "yes" || test "$USE_X_TOOLKIT" = "maybe"; then
2568 GTK_MODULES="gtk+-3.0 >= $GTK_REQUIRED glib-2.0 >= $GLIB_REQUIRED"
2570 dnl Checks for libraries.
2571 EMACS_CHECK_MODULES([GTK], [$GTK_MODULES],
2572 [pkg_check_gtk=yes], [pkg_check_gtk=no])
2573 if test "$pkg_check_gtk" = "no" && test "$with_gtk3" = "yes"; then
2574 AC_MSG_ERROR($GTK_PKG_ERRORS)
2576 if test "$pkg_check_gtk" = "yes"; then
2577 AC_DEFINE(HAVE_GTK3, 1, [Define to 1 if using GTK 3 or later.])
2578 GTK_OBJ=emacsgtkfixed.o
2579 gtk_term_header=gtkutil.h
2580 USE_GTK_TOOLKIT="GTK3"
2581 if test "x$ac_enable_gtk_deprecation_warnings" = x; then
2582 AC_DEFINE([GDK_DISABLE_DEPRECATION_WARNINGS], [1],
2583 [Define to 1 to disable GTK+/GDK deprecation warnings.])
2584 AC_DEFINE([GLIB_DISABLE_DEPRECATION_WARNINGS], [1],
2585 [Define to 1 to disable Glib deprecation warnings.])
2589 gtk3_pkg_errors="$GTK_PKG_ERRORS "
2593 if test "${with_gtk2}" = "yes" || test "$check_gtk2" = "yes"; then
2596 GTK_MODULES="gtk+-2.0 >= $GTK_REQUIRED glib-2.0 >= $GLIB_REQUIRED"
2598 dnl Checks for libraries.
2599 EMACS_CHECK_MODULES([GTK], [$GTK_MODULES],
2600 [pkg_check_gtk=yes], [pkg_check_gtk=no])
2601 if test "$pkg_check_gtk" = "no" &&
2602 { test "$with_gtk" = yes || test "$with_gtk2" = "yes"; }
2604 AC_MSG_ERROR($gtk3_pkg_errors$GTK_PKG_ERRORS)
2606 test "$pkg_check_gtk" = "yes" && USE_GTK_TOOLKIT="GTK2"
2613 if test x"$pkg_check_gtk" = xyes; then
2616 CFLAGS="$CFLAGS $GTK_CFLAGS"
2617 LIBS="$GTK_LIBS $LIBS"
2618 dnl Try to compile a simple GTK program.
2619 AC_CACHE_CHECK([whether GTK compiles], [emacs_cv_gtk_compiles],
2622 [[/* Check the Gtk and Glib APIs. */
2623 #include <gtk/gtk.h>
2624 #include <glib-object.h>
2626 callback (GObject *go, GParamSpec *spec, gpointer user_data)
2630 GtkSettings *gs = 0;
2631 /* Use G_CALLBACK to make sure function pointers can be cast to void *;
2632 strict C prohibits this. Use gtk_main_iteration to test that the
2633 libraries are there. */
2634 if (g_signal_handler_find (G_OBJECT (gs), G_SIGNAL_MATCH_FUNC,
2635 0, 0, 0, G_CALLBACK (callback), 0))
2636 gtk_main_iteration ();
2638 [emacs_cv_gtk_compiles=yes], [emacs_cv_gtk_compiles=no])])
2639 if test "${emacs_cv_gtk_compiles}" != "yes"; then
2641 if test "$USE_X_TOOLKIT" != "maybe"; then
2642 AC_MSG_ERROR([Gtk+ wanted, but it does not compile, see config.log. Maybe some x11-devel files missing?]);
2645 C_SWITCH_X_SITE="$C_SWITCH_X_SITE $GTK_CFLAGS"
2647 AC_DEFINE(USE_GTK, 1, [Define to 1 if using GTK.])
2648 GTK_OBJ="gtkutil.o $GTK_OBJ"
2649 term_header=$gtk_term_header
2651 AC_MSG_WARN([[Your version of Gtk+ will have problems with
2652 closing open displays. This is no problem if you just use
2653 one display, but if you use more than one and close one of them
2655 See https://gitlab.gnome.org/GNOME/gtk/issues/221]])
2662 if test "${HAVE_GTK}" = "yes"; then
2664 dnl GTK scrollbars resemble toolkit scrollbars a lot, so to avoid
2665 dnl a lot if #ifdef:s, say we have toolkit scrollbars.
2666 if test "$with_toolkit_scroll_bars" != no; then
2667 with_toolkit_scroll_bars=yes
2670 dnl Check if we have the old file selection dialog declared and
2671 dnl in the link library. In 2.x it may be in the library,
2672 dnl but not declared if deprecated featured has been selected out.
2673 dnl AC_CHECK_DECL checks for a macro, so check for GTK_TYPE_FILE_SELECTION.
2674 HAVE_GTK_FILE_SELECTION=no
2675 AC_CHECK_DECL(GTK_TYPE_FILE_SELECTION, HAVE_GTK_FILE_SELECTION=yes,
2676 HAVE_GTK_FILE_SELECTION=no, [AC_INCLUDES_DEFAULT
2677 #include <gtk/gtk.h>])
2678 if test "$HAVE_GTK_FILE_SELECTION" = yes; then
2679 AC_CHECK_FUNCS(gtk_file_selection_new)
2682 dnl Same as above for gtk_handle_box.
2683 HAVE_GTK_HANDLE_BOX=no
2684 AC_CHECK_DECL(GTK_TYPE_HANDLE_BOX, HAVE_GTK_HANDLE_BOX=yes,
2685 HAVE_GTK_HANDLE_BOX=no, [AC_INCLUDES_DEFAULT
2686 #include <gtk/gtk.h>])
2687 if test "$HAVE_GTK_HANDLE_BOX" = yes; then
2688 AC_CHECK_FUNCS(gtk_handle_box_new)
2691 dnl Same as above for gtk_tearoff_menu_item.
2692 HAVE_GTK_TEAROFF_MENU_ITEM=no
2693 AC_CHECK_DECL(GTK_TYPE_TEAROFF_MENU_ITEM, HAVE_GTK_TEAROFF_MENU_ITEM=yes,
2694 HAVE_GTK_TEAROFF_MENU_ITEM=no, [AC_INCLUDES_DEFAULT
2695 #include <gtk/gtk.h>])
2696 if test "$HAVE_GTK_TEAROFF_MENU_ITEM" = yes; then
2697 AC_CHECK_FUNCS(gtk_tearoff_menu_item_new)
2700 dnl Check for functions introduced in 2.14 and later.
2701 AC_CHECK_FUNCS(gtk_widget_get_window gtk_widget_set_has_window \
2702 gtk_dialog_get_action_area gtk_widget_get_sensitive \
2703 gtk_widget_get_mapped gtk_adjustment_get_page_size \
2704 gtk_orientable_set_orientation \
2705 gtk_window_set_has_resize_grip)
2707 term_header=gtkutil.h
2711 dnl Enable xwidgets if GTK3 and WebKitGTK+ are available.
2714 if test "$with_xwidgets" != "no"; then
2715 test "$USE_GTK_TOOLKIT" = "GTK3" && test "$window_system" != "none" ||
2716 AC_MSG_ERROR([xwidgets requested but gtk3 not used.])
2718 WEBKIT_REQUIRED=2.12
2719 WEBKIT_MODULES="webkit2gtk-4.0 >= $WEBKIT_REQUIRED"
2720 EMACS_CHECK_MODULES([WEBKIT], [$WEBKIT_MODULES])
2721 HAVE_XWIDGETS=$HAVE_WEBKIT
2722 test $HAVE_XWIDGETS = yes ||
2723 AC_MSG_ERROR([xwidgets requested but WebKitGTK+ not found.])
2725 XWIDGETS_OBJ=xwidget.o
2726 AC_DEFINE([HAVE_XWIDGETS], 1, [Define to 1 if you have xwidgets support.])
2728 AC_SUBST(XWIDGETS_OBJ)
2733 dnl D-Bus has been tested under GNU/Linux only. Must be adapted for
2734 dnl other platforms.
2737 if test "${with_dbus}" = "yes"; then
2738 EMACS_CHECK_MODULES([DBUS], [dbus-1 >= 1.0])
2739 if test "$HAVE_DBUS" = yes; then
2740 AC_DEFINE(HAVE_DBUS, 1, [Define to 1 if using D-Bus.])
2741 dnl dbus_watch_get_unix_fd has been introduced in D-Bus 1.1.1.
2742 dnl dbus_type_is_valid and dbus_validate_* have been introduced in
2745 LIBS="$LIBS $DBUS_LIBS"
2746 AC_CHECK_FUNCS(dbus_watch_get_unix_fd \
2747 dbus_type_is_valid \
2748 dbus_validate_bus_name \
2749 dbus_validate_path \
2750 dbus_validate_interface \
2751 dbus_validate_member)
2756 AC_SUBST(DBUS_CFLAGS)
2760 dnl GSettings has been tested under GNU/Linux only.
2762 if test "${HAVE_X11}" = "yes" && test "${with_gsettings}" = "yes"; then
2763 EMACS_CHECK_MODULES([GSETTINGS], [gio-2.0 >= 2.26])
2764 if test "$HAVE_GSETTINGS" = "yes"; then
2766 CFLAGS="$CFLAGS $GSETTINGS_CFLAGS"
2768 LIBS="$LIBS $GSETTINGS_LIBS"
2769 AC_CACHE_CHECK([whether GSettings is in gio], [emacs_cv_gsettings_in_gio],
2772 [[/* Check that gsettings really is present. */
2773 #include <glib-object.h>
2774 #include <gio/gio.h>
2777 GSettings *settings;
2778 GVariant *val = g_settings_get_value (settings, "");
2780 [emacs_cv_gsettings_in_gio=yes], [emacs_cv_gsettings_in_gio=no])])
2782 if test "$emacs_cv_gsettings_in_gio" = "yes"; then
2783 AC_DEFINE(HAVE_GSETTINGS, 1, [Define to 1 if using GSettings.])
2784 SETTINGS_CFLAGS="$GSETTINGS_CFLAGS"
2785 SETTINGS_LIBS="$GSETTINGS_LIBS"
2786 test "$with_gconf" = "yes" || with_gconf=no
2793 dnl GConf has been tested under GNU/Linux only.
2794 dnl The version is really arbitrary, it is about the same age as Gtk+ 2.6.
2796 if test "${HAVE_X11}" = "yes" && test "${with_gconf}" != "no"; then
2797 EMACS_CHECK_MODULES([GCONF], [gconf-2.0 >= 2.13])
2798 if test "$HAVE_GCONF" = yes; then
2799 AC_DEFINE(HAVE_GCONF, 1, [Define to 1 if using GConf.])
2800 dnl Newer GConf doesn't link with g_objects, so this is not defined.
2801 SETTINGS_CFLAGS="$SETTINGS_CFLAGS $GCONF_CFLAGS"
2802 SETTINGS_LIBS="$SETTINGS_LIBS $GCONF_LIBS"
2806 if test "$HAVE_GSETTINGS" = "yes" || test "$HAVE_GCONF" = "yes"; then
2807 EMACS_CHECK_MODULES([GOBJECT], [gobject-2.0 >= 2.0])
2808 if test "$HAVE_GOBJECT" = "yes"; then
2809 SETTINGS_CFLAGS="$SETTINGS_CFLAGS $GOBJECT_CFLAGS"
2810 SETTINGS_LIBS="$SETTINGS_LIBS $GOBJECT_LIBS"
2812 SAVE_CFLAGS="$CFLAGS"
2814 CFLAGS="$SETTINGS_CFLAGS $CFLAGS"
2815 LIBS="$SETTINGS_LIBS $LIBS"
2816 CFLAGS="$SAVE_CFLAGS"
2819 AC_SUBST(SETTINGS_CFLAGS)
2820 AC_SUBST(SETTINGS_LIBS)
2823 dnl SELinux is available for GNU/Linux only.
2826 if test "${with_selinux}" = "yes"; then
2827 AC_CHECK_LIB([selinux], [lgetfilecon], HAVE_LIBSELINUX=yes, HAVE_LIBSELINUX=no)
2828 if test "$HAVE_LIBSELINUX" = yes; then
2829 AC_DEFINE(HAVE_LIBSELINUX, 1, [Define to 1 if using SELinux.])
2830 LIBSELINUX_LIBS=-lselinux
2833 AC_SUBST(LIBSELINUX_LIBS)
2836 if test "${with_gnutls}" = "yes" ; then
2837 EMACS_CHECK_MODULES([LIBGNUTLS], [gnutls >= 2.12.2],
2838 [HAVE_GNUTLS=yes], [HAVE_GNUTLS=no])
2839 if test "${HAVE_GNUTLS}" = "yes"; then
2840 AC_DEFINE(HAVE_GNUTLS, 1, [Define if using GnuTLS.])
2843 # Windows loads GnuTLS dynamically
2844 if test "${opsys}" = "mingw32"; then
2849 AC_SUBST(LIBGNUTLS_LIBS)
2850 AC_SUBST(LIBGNUTLS_CFLAGS)
2853 if test "${with_libsystemd}" = "yes" ; then
2854 dnl This code has been tested with libsystemd 222 and later.
2855 dnl FIXME: Find the earliest version number for which Emacs should work,
2856 dnl and change '222' to that number.
2857 EMACS_CHECK_MODULES([LIBSYSTEMD], [libsystemd >= 222],
2858 [HAVE_LIBSYSTEMD=yes], [HAVE_LIBSYSTEMD=no])
2859 if test "${HAVE_LIBSYSTEMD}" = "yes"; then
2860 AC_DEFINE(HAVE_LIBSYSTEMD, 1, [Define if using libsystemd.])
2864 AC_SUBST(LIBSYSTEMD_LIBS)
2865 AC_SUBST(LIBSYSTEMD_CFLAGS)
2870 if test "${with_json}" = yes; then
2871 EMACS_CHECK_MODULES([JSON], [jansson >= 2.7],
2872 [HAVE_JSON=yes], [HAVE_JSON=no])
2873 if test "${HAVE_JSON}" = yes; then
2874 AC_DEFINE(HAVE_JSON, 1, [Define if using Jansson.])
2878 # Windows loads libjansson dynamically
2879 if test "${opsys}" = "mingw32"; then
2885 AC_SUBST(JSON_CFLAGS)
2891 dnl MS Windows native file monitor is available for mingw32 only.
2892 case $with_file_notification,$opsys in
2894 AC_MSG_ERROR(['--with-file-notification=w32' was specified, but
2895 this is only supported on MS-Windows native and MinGW32 builds.
2896 Consider using gfile instead.])
2898 w32,* | yes,mingw32)
2899 AC_CHECK_HEADER(windows.h)
2900 if test "$ac_cv_header_windows_h" = yes ; then
2901 AC_DEFINE(HAVE_W32NOTIFY, 1, [Define to 1 to use w32notify.])
2902 NOTIFY_OBJ=w32notify.o
2903 NOTIFY_SUMMARY="yes (w32)"
2907 dnl inotify is available only on GNU/Linux.
2908 case $with_file_notification,$NOTIFY_OBJ in
2910 AC_CHECK_HEADER(sys/inotify.h)
2911 if test "$ac_cv_header_sys_inotify_h" = yes ; then
2912 AC_CHECK_FUNC(inotify_init1)
2913 if test "$ac_cv_func_inotify_init1" = yes; then
2914 AC_DEFINE(HAVE_INOTIFY, 1, [Define to 1 to use inotify.])
2915 NOTIFY_OBJ=inotify.o
2916 NOTIFY_SUMMARY="yes -lglibc (inotify)"
2921 dnl kqueue is available on BSD-like systems.
2922 case $with_file_notification,$NOTIFY_OBJ in
2924 EMACS_CHECK_MODULES([KQUEUE], [libkqueue])
2925 if test "$HAVE_KQUEUE" = "yes"; then
2926 AC_DEFINE(HAVE_KQUEUE, 1, [Define to 1 to use kqueue.])
2927 CPPFLAGS="$CPPFLAGS -I/usr/include/kqueue"
2928 NOTIFY_CFLAGS=$KQUEUE_CFLAGS
2929 NOTIFY_LIBS=$KQUEUE_LIBS
2931 NOTIFY_SUMMARY="yes -lkqueue"
2933 AC_SEARCH_LIBS(kqueue, [])
2934 if test "$ac_cv_search_kqueue" != no; then
2935 AC_DEFINE(HAVE_KQUEUE, 1, [Define to 1 to use kqueue.])
2937 NOTIFY_SUMMARY="yes (kqueue)"
2942 dnl g_file_monitor exists since glib 2.18. G_FILE_MONITOR_EVENT_MOVED
2943 dnl has been added in glib 2.24. It has been tested under
2945 case $with_file_notification,$NOTIFY_OBJ in
2947 if test "${HAVE_NS}" = yes; then
2948 AC_MSG_ERROR(['--with-file-notification=gfile' is not supported in NextStep builds.
2949 Consider kqueue instead.])
2951 EMACS_CHECK_MODULES([GFILENOTIFY], [gio-2.0 >= 2.24])
2952 if test "$HAVE_GFILENOTIFY" = "yes"; then
2953 AC_DEFINE(HAVE_GFILENOTIFY, 1, [Define to 1 if using GFile.])
2954 NOTIFY_CFLAGS=$GFILENOTIFY_CFLAGS
2955 NOTIFY_LIBS=$GFILENOTIFY_LIBS
2956 NOTIFY_OBJ=gfilenotify.o
2957 NOTIFY_SUMMARY="yes -lgio (gfile)"
2962 case $with_file_notification,$NOTIFY_OBJ in
2963 yes,* | no,* | *,?*) ;;
2964 *) AC_MSG_ERROR([File notification '$with_file_notification' requested but requirements not found.]) ;;
2967 if test -n "$NOTIFY_OBJ"; then
2968 AC_DEFINE(USE_FILE_NOTIFY, 1, [Define to 1 if using file notifications.])
2970 AC_SUBST(NOTIFY_CFLAGS)
2971 AC_SUBST(NOTIFY_LIBS)
2972 AC_SUBST(NOTIFY_OBJ)
2974 dnl Do not put whitespace before the #include statements below.
2975 dnl Older compilers (eg sunos4 cc) choke on it.
2978 if test x"${USE_X_TOOLKIT}" = xmaybe || test x"${USE_X_TOOLKIT}" = xLUCID; then
2979 if test "$with_xaw3d" != no; then
2980 AC_CACHE_VAL(emacs_cv_xaw3d,
2981 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[
2982 #include <X11/Intrinsic.h>
2983 #include <X11/Xaw3d/Simple.h>]],
2985 [AC_CHECK_LIB(Xaw3d, XawScrollbarSetThumb,
2986 emacs_cv_xaw3d=yes, emacs_cv_xaw3d=no)],
2987 emacs_cv_xaw3d=no)])
2991 if test $emacs_cv_xaw3d = yes; then
2992 AC_MSG_CHECKING(for xaw3d)
2993 AC_MSG_RESULT([yes; using Lucid toolkit])
2997 AC_DEFINE(HAVE_XAW3D, 1,
2998 [Define to 1 if you have the Xaw3d library (-lXaw3d).])
3000 AC_MSG_CHECKING(for xaw3d)
3002 AC_MSG_CHECKING(for libXaw)
3003 AC_CACHE_VAL(emacs_cv_xaw,
3004 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[
3005 #include <X11/Intrinsic.h>
3006 #include <X11/Xaw/Simple.h>]],
3010 if test $emacs_cv_xaw = yes; then
3011 AC_MSG_RESULT([yes; using Lucid toolkit])
3014 elif test x"${USE_X_TOOLKIT}" = xLUCID; then
3015 AC_MSG_ERROR([Lucid toolkit requires X11/Xaw include files])
3017 AC_MSG_ERROR([No X toolkit could be found.
3018 If you are sure you want Emacs compiled without an X toolkit, pass
3020 to configure. Otherwise, install the development libraries for the toolkit
3021 that you want to use (e.g. Gtk+) and re-run configure.])
3026 X_TOOLKIT_TYPE=$USE_X_TOOLKIT
3030 if test "${USE_X_TOOLKIT}" != "none"; then
3031 AC_MSG_CHECKING(X11 toolkit version)
3032 AC_CACHE_VAL(emacs_cv_x11_toolkit_version_6,
3033 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Intrinsic.h>]],
3034 [[#if XtSpecificationRelease < 6
3037 ]])], emacs_cv_x11_toolkit_version_6=yes, emacs_cv_x11_toolkit_version_6=no)])
3038 HAVE_X11XTR6=$emacs_cv_x11_toolkit_version_6
3039 if test $emacs_cv_x11_toolkit_version_6 = yes; then
3040 AC_MSG_RESULT(6 or newer)
3041 AC_DEFINE(HAVE_X11XTR6, 1,
3042 [Define to 1 if you have the X11R6 or newer version of Xt.])
3043 LIBXTR6="-lSM -lICE"
3045 ## Use libw.a along with X11R6 Xt.
3046 unixware) LIBXTR6="$LIBXTR6 -lw" ;;
3049 AC_MSG_RESULT(before 6)
3052 dnl If using toolkit, check whether libXmu.a exists.
3053 dnl tranle@intellicorp.com says libXmu.a can need XtMalloc in libXt.a to link.
3055 if test x$HAVE_X11XTR6 = xyes; then
3056 OTHERLIBS='-lXt -lSM -lICE'
3060 AC_SEARCH_LIBS([XmuConvertStandardSelection], [Xmu], [], [], [$OTHERLIBS])
3061 if test "X$LIBS" != "X$OLDLIBS"; then
3062 LIBXMU=$ac_cv_search_XmuConvertStandardSelection
3065 dnl ac_cv_search_XmuConvertStandardSelection is also referenced below.
3071 if test "${USE_X_TOOLKIT}" = "MOTIF"; then
3072 # OpenMotif may be installed in such a way on some GNU/Linux systems.
3073 if test -d /usr/include/openmotif; then
3074 CPPFLAGS="-I/usr/include/openmotif $CPPFLAGS"
3075 emacs_cv_openmotif=yes
3076 case "$canonical" in
3077 x86_64-*-linux-gnu* | powerpc64-*-linux-gnu* | sparc64-*-linux-gnu*)
3078 test -d /usr/lib64/openmotif && LDFLAGS="-L/usr/lib64/openmotif $LDFLAGS"
3081 test -d /usr/lib/openmotif && LDFLAGS="-L/usr/lib/openmotif $LDFLAGS"
3084 emacs_cv_openmotif=no
3086 AC_CACHE_CHECK(for (Open)Motif version 2.1, emacs_cv_motif_version_2_1,
3087 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <Xm/Xm.h>]],
3088 [[#if XmVERSION > 2 || (XmVERSION == 2 && XmREVISION >= 1)
3091 Motif version prior to 2.1.
3093 emacs_cv_motif_version_2_1=yes, emacs_cv_motif_version_2_1=no)])
3094 if test $emacs_cv_motif_version_2_1 = yes; then
3095 AC_CHECK_LIB(Xp, XpCreateContext, LIBXP=-lXp)
3096 if test x$emacs_cv_openmotif = xyes; then
3097 REAL_CPPFLAGS="-I/usr/include/openmotif $REAL_CPPFLAGS"
3100 AC_CACHE_CHECK(for LessTif where some systems put it, emacs_cv_lesstif,
3101 # We put this in CFLAGS temporarily to precede other -I options
3102 # that might be in CFLAGS temporarily.
3103 # We put this in CPPFLAGS where it precedes the other -I options.
3104 OLD_CPPFLAGS=$CPPFLAGS
3106 CPPFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $CPPFLAGS"
3107 CFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $CFLAGS"
3108 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include </usr/X11R6/LessTif/Motif1.2/include/Xm/Xm.h>]],
3110 emacs_cv_lesstif=yes, emacs_cv_lesstif=no)])
3111 if test $emacs_cv_lesstif = yes; then
3112 # Make sure this -I option remains in CPPFLAGS after it is set
3113 # back to REAL_CPPFLAGS.
3114 # There is no need to change REAL_CFLAGS, because REAL_CFLAGS does not
3115 # have those other -I options anyway. Ultimately, having this
3116 # directory ultimately in CPPFLAGS will be enough.
3117 REAL_CPPFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $REAL_CPPFLAGS"
3118 LDFLAGS="-L/usr/X11R6/LessTif/Motif1.2/lib $LDFLAGS"
3121 CPPFLAGS=$OLD_CPPFLAGS
3124 AC_CHECK_HEADER([Xm/BulletinB.h], [],
3125 [AC_MSG_ERROR([Motif toolkit requested but requirements not found.])])
3128 dnl Use toolkit scroll bars if configured for GTK or X toolkit and either
3129 dnl using Motif or Xaw3d is available, and unless
3130 dnl --with-toolkit-scroll-bars=no was specified.
3132 AH_TEMPLATE(USE_TOOLKIT_SCROLL_BARS,
3133 [Define to 1 if we should use toolkit scroll bars.])dnl
3134 USE_TOOLKIT_SCROLL_BARS=no
3135 if test "${with_toolkit_scroll_bars}" != "no"; then
3136 if test "${USE_X_TOOLKIT}" != "none"; then
3137 if test "${USE_X_TOOLKIT}" = "MOTIF"; then
3138 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3140 USE_TOOLKIT_SCROLL_BARS=yes
3141 elif test "${HAVE_XAW3D}" = "yes" || test "${USE_X_TOOLKIT}" = "LUCID"; then
3142 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3143 USE_TOOLKIT_SCROLL_BARS=yes
3145 elif test "${HAVE_GTK}" = "yes"; then
3146 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3147 USE_TOOLKIT_SCROLL_BARS=yes
3148 elif test "${HAVE_NS}" = "yes"; then
3149 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3150 USE_TOOLKIT_SCROLL_BARS=yes
3151 elif test "${HAVE_W32}" = "yes"; then
3152 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3153 USE_TOOLKIT_SCROLL_BARS=yes
3157 dnl See if XIM is available.
3158 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
3159 #include <X11/Xlib.h>
3160 #include <X11/Xresource.h>]],
3161 [[XIMProc callback;]])],
3163 AC_DEFINE(HAVE_XIM, 1, [Define to 1 if XIM is available])],
3166 dnl '--with-xim' now controls only the initial value of use_xim at run time.
3168 if test "${with_xim}" != "no"; then
3169 AC_DEFINE(USE_XIM, 1,
3170 [Define to 1 if we should use XIM, if it is available.])
3174 if test "${HAVE_XIM}" != "no"; then
3176 if test "$GCC" = yes; then
3177 CFLAGS="$CFLAGS --pedantic-errors"
3179 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
3180 #include <X11/Xlib.h>
3181 #include <X11/Xresource.h>]],
3187 XPointer *client_data;
3189 /* If we're not using GCC, it's probably not XFree86, and this is
3190 probably right, but we can't use something like --pedantic-errors. */
3191 extern Bool XRegisterIMInstantiateCallback(Display*, XrmDatabase, char*,
3192 char*, XIMProc, XPointer*);
3194 (void)XRegisterIMInstantiateCallback(display, db, res_name, res_class, callback,
3196 [emacs_cv_arg6_star=yes])
3197 AH_TEMPLATE(XRegisterIMInstantiateCallback_arg6,
3198 [Define to the type of the 6th arg of XRegisterIMInstantiateCallback,
3199 either XPointer or XPointer*.])dnl
3200 if test "$emacs_cv_arg6_star" = yes; then
3201 AC_DEFINE(XRegisterIMInstantiateCallback_arg6, [XPointer*])
3203 AC_DEFINE(XRegisterIMInstantiateCallback_arg6, [XPointer])
3208 ### Start of font-backend (under any platform) section.
3209 # (nothing here yet -- this is a placeholder)
3210 ### End of font-backend (under any platform) section.
3212 ### Start of font-backend (under X11) section.
3213 if test "${HAVE_X11}" = "yes"; then
3214 ## Use -lXft if available, unless '--with-xft=no'.
3216 if test "x${with_x}" = "xno"; then
3220 if test "$with_xft" != no; then
3221 EMACS_CHECK_MODULES([FONTCONFIG], [fontconfig >= 2.2.0])
3222 with_xft=$HAVE_FONTCONFIG
3225 if test "x${with_xft}" != "xno"; then
3227 EMACS_CHECK_MODULES([XFT], [xft >= 0.13.0], [], [HAVE_XFT=no])
3228 ## Because xterm.c uses XRenderQueryExtension when XFT is
3229 ## enabled, we also need to link to -lXrender.
3231 AC_CHECK_LIB(Xrender, XRenderQueryExtension, HAVE_XRENDER=yes)
3232 if test "$HAVE_XFT" != no && test "$HAVE_XRENDER" != no; then
3233 OLD_CPPFLAGS="$CPPFLAGS"
3234 OLD_CFLAGS="$CFLAGS"
3236 CPPFLAGS="$CPPFLAGS $XFT_CFLAGS"
3237 CFLAGS="$CFLAGS $XFT_CFLAGS"
3238 XFT_LIBS="-lXrender $XFT_LIBS"
3239 LIBS="$XFT_LIBS $LIBS"
3240 AC_CHECK_HEADER(X11/Xft/Xft.h,
3241 AC_CHECK_LIB(Xft, XftFontOpen, HAVE_XFT=yes, , $XFT_LIBS) , ,
3242 [[#include <X11/X.h>]])
3244 if test "${HAVE_XFT}" = "yes"; then
3245 AC_DEFINE(HAVE_XFT, 1, [Define to 1 if you have the Xft library.])
3247 C_SWITCH_X_SITE="$C_SWITCH_X_SITE $XFT_CFLAGS"
3248 fi # "${HAVE_XFT}" = "yes"
3249 CPPFLAGS=$OLD_CPPFLAGS
3253 # Make sure XFT is disabled if we found XFT but not XRender
3255 fi # "$HAVE_XFT" != no
3256 fi # "x${with_xft}" != "xno"
3258 ## We used to allow building with FreeType and without Xft.
3259 ## However, the ftx font backend driver is not in good shape.
3260 if test "$HAVE_XFT" != "yes"; then
3261 dnl For the "Does Emacs use" message at the end.
3265 dnl Strict linkers fail with
3266 dnl ftfont.o: undefined reference to symbol 'FT_New_Face'
3267 dnl if -lfreetype is not specified.
3268 dnl The following is needed to set FREETYPE_LIBS.
3269 EMACS_CHECK_MODULES([FREETYPE], [freetype2])
3271 test "$HAVE_FREETYPE" = "no" && AC_MSG_ERROR(libxft requires libfreetype)
3275 if test "${HAVE_FREETYPE}" = "yes"; then
3276 AC_DEFINE(HAVE_FREETYPE, 1,
3277 [Define to 1 if using the freetype and fontconfig libraries.])
3278 if test "${with_libotf}" != "no"; then
3279 EMACS_CHECK_MODULES([LIBOTF], [libotf])
3280 if test "$HAVE_LIBOTF" = "yes"; then
3281 AC_DEFINE(HAVE_LIBOTF, 1, [Define to 1 if using libotf.])
3282 AC_CHECK_LIB(otf, OTF_get_variation_glyphs,
3283 HAVE_OTF_GET_VARIATION_GLYPHS=yes,
3284 HAVE_OTF_GET_VARIATION_GLYPHS=no)
3285 if test "${HAVE_OTF_GET_VARIATION_GLYPHS}" = "yes"; then
3286 AC_DEFINE(HAVE_OTF_GET_VARIATION_GLYPHS, 1,
3287 [Define to 1 if libotf has OTF_get_variation_glyphs.])
3289 if ! $PKG_CONFIG --atleast-version=0.9.16 libotf; then
3290 AC_DEFINE(HAVE_OTF_KANNADA_BUG, 1,
3291 [Define to 1 if libotf is affected by https://debbugs.gnu.org/28110.])
3295 dnl FIXME should there be an error if HAVE_FREETYPE != yes?
3296 dnl Does the new font backend require it, or can it work without it?
3300 if test "${HAVE_LIBOTF}" = yes; then
3301 if test "${with_m17n_flt}" != "no"; then
3302 EMACS_CHECK_MODULES([M17N_FLT], [m17n-flt])
3303 if test "$HAVE_M17N_FLT" = "yes"; then
3304 AC_DEFINE(HAVE_M17N_FLT, 1, [Define to 1 if using libm17n-flt.])
3315 ### End of font-backend (under X11) section.
3317 AC_SUBST(FREETYPE_CFLAGS)
3318 AC_SUBST(FREETYPE_LIBS)
3319 AC_SUBST(FONTCONFIG_CFLAGS)
3320 AC_SUBST(FONTCONFIG_LIBS)
3321 AC_SUBST(LIBOTF_CFLAGS)
3322 AC_SUBST(LIBOTF_LIBS)
3323 AC_SUBST(M17N_FLT_CFLAGS)
3324 AC_SUBST(M17N_FLT_LIBS)
3327 if test "${HAVE_X11}" = "yes"; then
3328 if test "${with_cairo}" != "no"; then
3329 CAIRO_REQUIRED=1.12.0
3330 CAIRO_MODULE="cairo >= $CAIRO_REQUIRED"
3331 EMACS_CHECK_MODULES(CAIRO, $CAIRO_MODULE)
3332 if test $HAVE_CAIRO = yes; then
3333 AC_DEFINE(USE_CAIRO, 1, [Define to 1 if using cairo.])
3335 AC_MSG_ERROR([cairo requested but not found.])
3338 CFLAGS="$CFLAGS $CAIRO_CFLAGS"
3339 LIBS="$LIBS $CAIRO_LIBS"
3340 AC_SUBST(CAIRO_CFLAGS)
3341 AC_SUBST(CAIRO_LIBS)
3345 if test "${HAVE_X11}" = "yes"; then
3346 AC_CHECK_HEADER(X11/Xlib-xcb.h,
3347 AC_CHECK_LIB(xcb, xcb_translate_coordinates, HAVE_XCB=yes))
3348 if test "${HAVE_XCB}" = "yes"; then
3349 AC_CHECK_LIB(X11-xcb, XGetXCBConnection, HAVE_X11_XCB=yes)
3350 if test "${HAVE_X11_XCB}" = "yes"; then
3351 AC_DEFINE(USE_XCB, 1,
3352 [Define to 1 if you have the XCB library and X11-XCB library for mixed
3353 X11/XCB programming.])
3354 XCB_LIBS="-lX11-xcb -lxcb"
3360 ### Use -lXpm if available, unless '--with-xpm=no'.
3361 ### mingw32 doesn't use -lXpm, since it loads the library dynamically.
3362 ### The Cygwin-w32 build uses <noX/xpm.h> instead of <X11/xpm.h>, so
3363 ### we need to set LDFLAGS accordingly.
3366 if test "${HAVE_W32}" = "yes" && test "${opsys}" = "cygwin"; then
3367 if test "${with_xpm}" != "no"; then
3368 SAVE_LDFLAGS="$LDFLAGS"
3369 LDFLAGS="$LDFLAGS -L/usr/lib/noX"
3370 AC_CHECK_HEADER(noX/xpm.h,
3371 [AC_CHECK_LIB(Xpm, XpmReadFileToImage, HAVE_XPM=yes)])
3372 if test "${HAVE_XPM}" = "yes"; then
3373 AC_CACHE_CHECK([for XpmReturnAllocPixels preprocessor define],
3374 [emacs_cv_cpp_xpm_return_alloc_pixels],
3375 [AC_EGREP_CPP(no_return_alloc_pixels,
3376 [#include "noX/xpm.h"
3377 #ifndef XpmReturnAllocPixels
3378 no_return_alloc_pixels
3380 ], emacs_cv_cpp_xpm_return_alloc_pixels=no,
3381 emacs_cv_cpp_xpm_return_alloc_pixels=yes)])
3383 if test "$emacs_cv_cpp_xpm_return_alloc_pixels" = "no"; then
3385 LDFLAGS="$SAVE_LDFLAGS"
3390 if test "${HAVE_XPM}" = "yes"; then
3391 AC_DEFINE(HAVE_XPM, 1, [Define to 1 if you have the Xpm library (-lXpm).])
3396 if test "${HAVE_X11}" = "yes"; then
3397 dnl Avoid Xpm on AIX unless requested, as it crashes; see Bug#17598.
3398 test "$opsys$with_xpm_set" = aix4-2 && with_xpm=no
3400 if test "${with_xpm}" != "no"; then
3401 AC_CHECK_HEADER(X11/xpm.h,
3402 [AC_CHECK_LIB(Xpm, XpmReadFileToPixmap, HAVE_XPM=yes, , -lX11)])
3403 if test "${HAVE_XPM}" = "yes"; then
3404 AC_CACHE_CHECK([for XpmReturnAllocPixels preprocessor define],
3405 [emacs_cv_cpp_xpm_return_alloc_pixels],
3406 [AC_EGREP_CPP(no_return_alloc_pixels,
3407 [#include "X11/xpm.h"
3408 #ifndef XpmReturnAllocPixels
3409 no_return_alloc_pixels
3411 ], emacs_cv_cpp_xpm_return_alloc_pixels=no,
3412 emacs_cv_cpp_xpm_return_alloc_pixels=yes)])
3414 if test "$emacs_cv_cpp_xpm_return_alloc_pixels" = "no"; then
3420 if test "${HAVE_XPM}" = "yes"; then
3421 AC_DEFINE(HAVE_XPM, 1, [Define to 1 if you have the Xpm library (-lXpm).])
3423 elif test "$opsys,$LUCID_LIBW" = aix4-2,-lXaw; then
3424 dnl AIX -lXaw needs -lXpm linked too; see Bug#17598 Message#152.
3429 ### FIXME: Perhaps regroup to minimize code duplication due to MinGW's
3430 ### slightly different requirements wrt image libraries (it doesn't
3431 ### use -lXpm because it loads the xpm shared library dynamically at
3433 if test "${opsys}" = "mingw32"; then
3434 if test "${with_xpm}" != "no"; then
3435 AC_CHECK_HEADER(X11/xpm.h, HAVE_XPM=yes, HAVE_XPM=no, [
3439 if test "${HAVE_XPM}" = "yes"; then
3440 AC_DEFINE(HAVE_XPM, 1, [Define to 1 if you have the Xpm library (-lXpm).])
3446 ### Use -ljpeg if available, unless '--with-jpeg=no'.
3449 if test "${NS_IMPL_COCOA}" = yes; then
3450 : # Cocoa provides its own jpeg support, so do nothing.
3451 elif test "${with_jpeg}" != "no"; then
3452 AC_CACHE_CHECK([for jpeglib 6b or later],
3455 for emacs_cv_jpeglib in yes -ljpeg no; do
3456 case $emacs_cv_jpeglib in
3459 *) LIBS="$LIBS $emacs_cv_jpeglib";;
3463 [[#undef HAVE_STDLIB_H /* Avoid config.h/jpeglib.h collision. */
3464 #include <stdio.h> /* jpeglib.h needs FILE and size_t. */
3465 #include <jpeglib.h>
3467 char verify[JPEG_LIB_VERSION < 62 ? -1 : 1];
3468 struct jpeg_decompress_struct cinfo;
3471 jpeg_create_decompress (&cinfo);
3472 WARNMS (&cinfo, JWRN_JPEG_EOF);
3473 jpeg_destroy_decompress (&cinfo);
3475 [emacs_link_ok=yes],
3478 test $emacs_link_ok = yes && break
3480 if test "$emacs_cv_jpeglib" != no; then
3482 AC_DEFINE([HAVE_JPEG], 1,
3483 [Define to 1 if you have the jpeg library (typically -ljpeg).])
3484 ### mingw32 doesn't use -ljpeg, since it loads the library
3485 ### dynamically when needed, and doesn't want a run-time
3486 ### dependency on the jpeglib DLL.
3487 test "$emacs_cv_jpeglib" != yes && test "${opsys}" != "mingw32" \
3488 && LIBJPEG=$emacs_cv_jpeglib
3496 if test "${with_lcms2}" != "no"; then
3497 EMACS_CHECK_MODULES([LCMS2], [lcms2])
3499 if test "${HAVE_LCMS2}" = "yes"; then
3500 AC_DEFINE([HAVE_LCMS2], 1, [Define to 1 if you have the lcms2 library (-llcms2).])
3501 ### mingw32 doesn't use -llcms2, since it loads the library dynamically.
3502 if test "${opsys}" = "mingw32"; then
3506 AC_SUBST(LCMS2_CFLAGS)
3507 AC_SUBST(LCMS2_LIBS)
3511 if test "${with_zlib}" != "no"; then
3513 AC_SEARCH_LIBS([inflateEnd], [z], [HAVE_ZLIB=yes])
3515 case $ac_cv_search_inflateEnd in
3516 -*) LIBZ=$ac_cv_search_inflateEnd ;;
3519 if test "${HAVE_ZLIB}" = "yes"; then
3520 AC_DEFINE([HAVE_ZLIB], 1, [Define to 1 if you have the zlib library (-lz).])
3521 ### mingw32 doesn't use -lz, since it loads the library dynamically.
3522 if test "${opsys}" = "mingw32"; then
3528 ### Dynamic modules support
3533 cygwin|mingw32) MODULES_SUFFIX=".dll" ;;
3534 *) MODULES_SUFFIX=".so" ;;
3536 if test "${with_modules}" != "no"; then
3542 cygwin|mingw32|darwin)
3546 # BSD systems have dlopen in libc.
3547 AC_CHECK_FUNC([dlopen], [HAVE_MODULES=yes])
3551 if test "${HAVE_MODULES}" = no; then
3552 AC_MSG_ERROR([Dynamic modules are not supported on your system])
3555 LIBS="$LIBS $LIBMODULES"
3556 AC_CHECK_FUNCS([dladdr dlfunc])
3561 if test "${HAVE_MODULES}" = yes; then
3562 MODULES_OBJ="dynlib.o emacs-module.o"
3563 AC_DEFINE(HAVE_MODULES, 1, [Define to 1 if dynamic modules are enabled])
3564 AC_DEFINE_UNQUOTED(MODULES_SUFFIX, "$MODULES_SUFFIX",
3565 [System extension for dynamic libraries])
3567 AC_SUBST(MODULES_OBJ)
3568 AC_SUBST(LIBMODULES)
3569 AC_SUBST(HAVE_MODULES)
3570 AC_SUBST(MODULES_SUFFIX)
3572 AC_CONFIG_FILES([src/emacs-module.h])
3573 AC_SUBST_FILE([module_env_snippet_25])
3574 AC_SUBST_FILE([module_env_snippet_26])
3575 module_env_snippet_25="$srcdir/src/module-env-25.h"
3576 module_env_snippet_26="$srcdir/src/module-env-26.h"
3578 ### Use -lpng if available, unless '--with-png=no'.
3582 if test "${NS_IMPL_COCOA}" = yes; then
3583 : # Cocoa provides its own png support, so do nothing.
3584 elif test "${with_png}" != no; then
3585 # mingw32 loads the library dynamically.
3586 if test "$opsys" = mingw32; then
3587 AC_CHECK_HEADER([png.h], [HAVE_PNG=yes])
3588 elif test "${HAVE_X11}" = "yes" || test "${HAVE_W32}" = "yes"; then
3589 EMACS_CHECK_MODULES([PNG], [libpng >= 1.0.0])
3590 if test $HAVE_PNG = yes; then
3593 # Test old way in case pkg-config doesn't have it (older machines).
3594 AC_MSG_CHECKING([for libpng not configured by pkg-config])
3596 png_cflags=`(libpng-config --cflags) 2>&AS_MESSAGE_LOG_FD` &&
3597 png_ldflags=`(libpng-config --ldflags) 2>&AS_MESSAGE_LOG_FD` || {
3598 # libpng-config does not work; configure by hand.
3599 # Debian unstable as of July 2003 has multiple libpngs, and puts png.h
3600 # in /usr/include/libpng.
3601 if test -r /usr/include/libpng/png.h &&
3602 test ! -r /usr/include/png.h; then
3603 png_cflags=-I/usr/include/libpng
3611 CFLAGS="$CFLAGS $png_cflags"
3612 LIBS="$png_ldflags -lz -lm $LIBS"
3614 [AC_LANG_PROGRAM([[#include <png.h>]],
3615 [[return !png_get_channels (0, 0);]])],
3617 PNG_CFLAGS=`AS_ECHO(["$png_cflags"]) | sed -e "$edit_cflags"`
3618 LIBPNG=$png_ldflags])
3621 AC_MSG_RESULT([$HAVE_PNG])
3624 # $LIBPNG requires explicit -lz in some cases.
3625 # We don't know what those cases are, exactly, so play it safe and
3626 # append -lz to any nonempty $LIBPNG, unless we're already using LIBZ.
3627 case " $LIBPNG ",$LIBZ in
3628 *' -lz '*, | *' ',?*) ;;
3629 *) LIBPNG="$LIBPNG -lz" ;;
3633 if test $HAVE_PNG = yes; then
3634 AC_DEFINE([HAVE_PNG], [1], [Define to 1 if you have the png library.])
3637 CFLAGS="$CFLAGS $PNG_CFLAGS"
3638 AC_CHECK_DECL([png_longjmp],
3640 [AC_DEFINE([PNG_DEPSTRUCT], [],
3641 [Define to empty to suppress deprecation warnings when building
3642 with --enable-gcc-warnings and with libpng versions before 1.5,
3643 which lack png_longjmp.])],
3649 AC_SUBST(PNG_CFLAGS)
3651 ### Use -ltiff if available, unless '--with-tiff=no'.
3652 ### mingw32 doesn't use -ltiff, since it loads the library dynamically.
3655 if test "${opsys}" = "mingw32"; then
3656 if test "${with_tiff}" != "no"; then
3657 AC_CHECK_HEADER(tiffio.h, HAVE_TIFF=yes, HAVE_TIFF=no)
3659 if test "${HAVE_TIFF}" = "yes"; then
3660 AC_DEFINE(HAVE_TIFF, 1, [Define to 1 if you have the tiff library (-ltiff).])
3662 elif test "${HAVE_X11}" = "yes" || test "${HAVE_W32}" = "yes"; then
3663 if test "${with_tiff}" != "no"; then
3664 AC_CHECK_HEADER(tiffio.h,
3666 # At least one tiff package requires the jpeg library.
3667 if test "${HAVE_JPEG}" = yes; then tifflibs="-ljpeg $tifflibs"; fi
3668 AC_CHECK_LIB(tiff, TIFFGetVersion, HAVE_TIFF=yes, , $tifflibs)])
3671 if test "${HAVE_TIFF}" = "yes"; then
3672 AC_DEFINE(HAVE_TIFF, 1, [Define to 1 if you have the tiff library (-ltiff).])
3673 dnl FIXME -lz -lm, as per libpng?
3679 ### Use -lgif or -lungif if available, unless '--with-gif=no'.
3680 ### mingw32 doesn't use -lgif/-lungif, since it loads the library dynamically.
3683 if test "${opsys}" = "mingw32"; then
3684 if test "${with_gif}" != "no"; then
3685 AC_CHECK_HEADER(gif_lib.h, HAVE_GIF=yes, HAVE_GIF=no)
3687 if test "${HAVE_GIF}" = "yes"; then
3688 AC_DEFINE(HAVE_GIF, 1, [Define to 1 if you have a gif (or ungif) library.])
3690 elif test "${HAVE_X11}" = "yes" && test "${with_gif}" != "no" \
3691 || test "${HAVE_W32}" = "yes"; then
3692 AC_CHECK_HEADER(gif_lib.h,
3693 # EGifPutExtensionLast only exists from version libungif-4.1.0b1.
3694 # Earlier versions can crash Emacs, but version 5.0 removes EGifPutExtensionLast.
3695 [AC_CHECK_LIB(gif, GifMakeMapObject, HAVE_GIF=yes,
3696 [AC_CHECK_LIB(gif, EGifPutExtensionLast, HAVE_GIF=yes, HAVE_GIF=maybe)])])
3698 if test "$HAVE_GIF" = yes; then
3700 elif test "$HAVE_GIF" = maybe; then
3701 # If gif_lib.h but no libgif, try libungif.
3702 AC_CHECK_LIB(ungif, EGifPutExtensionLast, HAVE_GIF=yes, HAVE_GIF=no)
3703 test "$HAVE_GIF" = yes && LIBGIF=-lungif
3706 if test "${HAVE_GIF}" = "yes"; then
3707 AC_DEFINE(HAVE_GIF, 1, [Define to 1 if you have a gif (or ungif) library.])
3712 dnl Check for required libraries.
3715 if test "${HAVE_X11}" = "yes"; then
3716 test "${with_xpm}" != "no" && test "${HAVE_XPM}" != "yes" &&
3717 MISSING="libXpm" && WITH_NO="--with-xpm=no"
3718 test "${with_jpeg}" != "no" && test "${HAVE_JPEG}" != "yes" &&
3719 MISSING="$MISSING libjpeg" && WITH_NO="$WITH_NO --with-jpeg=no"
3720 test "${with_png}" != "no" && test "${HAVE_PNG}" != "yes" &&
3721 MISSING="$MISSING libpng" && WITH_NO="$WITH_NO --with-png=no"
3722 test "${with_gif}" != "no" && test "${HAVE_GIF}" != "yes" &&
3723 MISSING="$MISSING libgif/libungif" && WITH_NO="$WITH_NO --with-gif=no"
3724 test "${with_tiff}" != "no" && test "${HAVE_TIFF}" != "yes" &&
3725 MISSING="$MISSING libtiff" && WITH_NO="$WITH_NO --with-tiff=no"
3727 test "${with_gnutls}" != "no" && test "${HAVE_GNUTLS}" != "yes" &&
3728 MISSING="$MISSING gnutls" && WITH_NO="$WITH_NO --with-gnutls=no"
3729 if test "X${MISSING}" != X; then
3730 AC_MSG_ERROR([The following required libraries were not found:
3732 Maybe some development libraries/packages are missing?
3733 If you don't want to link with them give
3735 as options to configure])
3738 ### Use -lgpm if available, unless '--with-gpm=no'.
3741 if test "${with_gpm}" != "no"; then
3742 AC_CHECK_HEADER(gpm.h,
3743 [AC_CHECK_LIB(gpm, Gpm_Open, HAVE_GPM=yes)])
3745 if test "${HAVE_GPM}" = "yes"; then
3746 AC_DEFINE(HAVE_GPM, 1, [Define to 1 if you have the gpm library (-lgpm).])
3752 dnl Check for malloc/malloc.h on darwin
3753 AC_CHECK_HEADERS_ONCE(malloc/malloc.h)
3756 ### Use NeXTstep API to implement GUI.
3757 if test "${HAVE_NS}" = "yes"; then
3758 AC_DEFINE(HAVE_NS, 1, [Define to 1 if you are using the NeXTstep API, either GNUstep or Cocoa on macOS.])
3759 if test "${NS_IMPL_COCOA}" = "yes"; then
3760 AC_DEFINE(NS_IMPL_COCOA, 1, [Define to 1 if you are using NS windowing under macOS.])
3762 if test "${NS_IMPL_GNUSTEP}" = "yes"; then
3763 AC_DEFINE(NS_IMPL_GNUSTEP, 1, [Define to 1 if you are using NS windowing under GNUstep.])
3764 if test $NS_GNUSTEP_CONFIG != yes; then
3765 # See also .m.o rule in src/Makefile.in. */
3766 # FIXME: are all these flags really needed? Document here why. */
3767 GNUSTEP_CFLAGS="-D_REENTRANT -fPIC -fno-strict-aliasing -I${GNUSTEP_SYSTEM_HEADERS} ${GNUSTEP_LOCAL_HEADERS}"
3768 ## Extra CFLAGS applied to src/*.m files.
3769 GNU_OBJC_CFLAGS="$GNU_OBJC_CFLAGS -fgnu-runtime -Wno-import -fconstant-string-class=NSConstantString -DGNUSTEP_BASE_LIBRARY=1 -DGNU_GUI_LIBRARY=1 -DGNU_RUNTIME=1 -DGSWARN -DGSDIAGNOSE"
3775 ### Use session management (-lSM -lICE) if available
3778 if test "${HAVE_X11}" = "yes"; then
3779 AC_CHECK_HEADER(X11/SM/SMlib.h,
3780 [AC_CHECK_LIB(SM, SmcOpenConnection, HAVE_X_SM=yes, , -lICE)])
3782 if test "${HAVE_X_SM}" = "yes"; then
3783 AC_DEFINE(HAVE_X_SM, 1, [Define to 1 if you have the SM library (-lSM).])
3789 ### Use XRandr (-lXrandr) if available
3791 if test "${HAVE_X11}" = "yes"; then
3792 XRANDR_REQUIRED=1.2.2
3793 XRANDR_MODULES="xrandr >= $XRANDR_REQUIRED"
3794 EMACS_CHECK_MODULES([XRANDR], [$XRANDR_MODULES])
3795 if test $HAVE_XRANDR = no; then
3796 # Test old way in case pkg-config doesn't have it (older machines).
3797 # Include Xrender.h by hand to work around bug in older Xrandr.h
3798 # (e.g. RHEL5) and silence (harmless) configure warning (bug#18465).
3799 AC_CHECK_HEADER(X11/extensions/Xrandr.h,
3800 [AC_CHECK_LIB(Xrandr, XRRGetScreenResources, HAVE_XRANDR=yes)],
3801 [], [AC_INCLUDES_DEFAULT
3802 #include <X11/extensions/Xrender.h>])
3803 if test $HAVE_XRANDR = yes; then
3804 XRANDR_LIBS=-lXrandr
3807 if test $HAVE_XRANDR = yes; then
3808 AC_DEFINE(HAVE_XRANDR, 1, [Define to 1 if you have the XRandr extension.])
3811 AC_SUBST(XRANDR_CFLAGS)
3812 AC_SUBST(XRANDR_LIBS)
3814 ### Use Xinerama (-lXinerama) if available
3816 if test "${HAVE_X11}" = "yes"; then
3817 XINERAMA_REQUIRED=1.0.2
3818 XINERAMA_MODULES="xinerama >= $XINERAMA_REQUIRED"
3819 EMACS_CHECK_MODULES([XINERAMA], [$XINERAMA_MODULES])
3820 if test $HAVE_XINERAMA = no; then
3821 # Test old way in case pkg-config doesn't have it (older machines).
3822 AC_CHECK_HEADER(X11/extensions/Xinerama.h,
3823 [AC_CHECK_LIB(Xinerama, XineramaQueryExtension, HAVE_XINERAMA=yes)])
3824 if test $HAVE_XINERAMA = yes; then
3825 XINERAMA_LIBS=-lXinerama
3828 if test $HAVE_XINERAMA = yes; then
3829 AC_DEFINE(HAVE_XINERAMA, 1, [Define to 1 if you have the Xinerama extension.])
3832 AC_SUBST(XINERAMA_CFLAGS)
3833 AC_SUBST(XINERAMA_LIBS)
3835 ### Use Xfixes (-lXfixes) if available
3837 if test "${HAVE_X11}" = "yes"; then
3838 XFIXES_REQUIRED=4.0.0
3839 XFIXES_MODULES="xfixes >= $XFIXES_REQUIRED"
3840 EMACS_CHECK_MODULES([XFIXES], [$XFIXES_MODULES])
3841 if test $HAVE_XFIXES = no; then
3842 # Test old way in case pkg-config doesn't have it (older machines).
3843 AC_CHECK_HEADER(X11/extensions/Xfixes.h,
3844 [AC_CHECK_LIB(Xfixes, XFixesHideCursor, HAVE_XFIXES=yes)])
3845 if test $HAVE_XFIXES = yes; then
3846 XFIXES_LIBS=-lXfixes
3849 if test $HAVE_XFIXES = yes; then
3850 AC_DEFINE(HAVE_XFIXES, 1, [Define to 1 if you have the Xfixes extension.])
3853 AC_SUBST(XFIXES_CFLAGS)
3854 AC_SUBST(XFIXES_LIBS)
3856 ### Use Xdbe (-lXdbe) if available
3858 if test "${HAVE_X11}" = "yes"; then
3859 AC_CHECK_HEADER(X11/extensions/Xdbe.h,
3860 [AC_CHECK_LIB(Xext, XdbeAllocateBackBufferName, HAVE_XDBE=yes)],
3862 [#include <X11/Xlib.h>
3864 if test $HAVE_XDBE = yes; then
3867 if test $HAVE_XDBE = yes; then
3868 AC_DEFINE(HAVE_XDBE, 1, [Define to 1 if you have the Xdbe extension.])
3871 AC_SUBST(XDBE_CFLAGS)
3874 ### Use libxml (-lxml2) if available
3875 ### mingw32 doesn't use -lxml2, since it loads the library dynamically.
3877 if test "${with_xml2}" != "no"; then
3878 ### I'm not sure what the version number should be, so I just guessed.
3879 EMACS_CHECK_MODULES([LIBXML2], [libxml-2.0 > 2.6.17])
3880 # Built-in libxml2 on OS X 10.8 lacks libxml-2.0.pc.
3881 if test "${HAVE_LIBXML2}" != "yes" && test "$opsys" = "darwin"; then
3882 SAVE_CPPFLAGS="$CPPFLAGS"
3883 if test -z "$xcsdkdir" -a -n "$XCRUN" -a ! -d /usr/include; then
3884 dnl /usr/include is not found. Try Xcode SDK dir if it is sane.
3885 xcsdkdir=`$XCRUN --show-sdk-path 2>/dev/null`
3887 *[[\\\"\#\$\&\'\`$am_lf\ \ ]]*)
3891 CPPFLAGS="$CPPFLAGS -isystem${xcsdkdir}/usr/include/libxml2"
3892 AC_CHECK_HEADER(libxml/HTMLparser.h,
3893 [AC_CHECK_DECL(HTML_PARSE_RECOVER, HAVE_LIBXML2=yes, ,
3894 [#include <libxml/HTMLparser.h>])])
3895 CPPFLAGS="$SAVE_CPPFLAGS"
3896 if test "${HAVE_LIBXML2}" = "yes"; then
3897 LIBXML2_CFLAGS="-isystem${xcsdkdir}/usr/include/libxml2"
3898 LIBXML2_LIBS="-lxml2"
3901 if test "${HAVE_LIBXML2}" = "yes"; then
3902 if test "${opsys}" != "mingw32"; then
3903 AC_CHECK_LIB(xml2, htmlReadMemory, HAVE_LIBXML2=yes, HAVE_LIBXML2=no,
3908 if test "${HAVE_LIBXML2}" = "yes"; then
3909 AC_DEFINE(HAVE_LIBXML2, 1, [Define to 1 if you have the libxml library (-lxml2).])
3916 AC_SUBST(LIBXML2_LIBS)
3917 AC_SUBST(LIBXML2_CFLAGS)
3921 if test ! "$with_mailutils"; then
3922 # Check for mail-locking functions in a "mail" library. Probably this should
3923 # have the same check as for liblockfile below.
3924 AC_CHECK_LIB([mail], [maillock], [have_mail=yes], [have_mail=no])
3925 if test $have_mail = yes; then
3927 AC_DEFINE([HAVE_LIBMAIL], [1],
3928 [Define to 1 if you have the 'mail' library (-lmail).])
3931 LIBS="$LIBS_MAIL $LIBS"
3932 AC_CHECK_FUNCS([touchlock])
3935 dnl Debian, at least:
3936 AC_CHECK_LIB([lockfile], [maillock], [have_lockfile=yes], [have_lockfile=no])
3937 if test $have_lockfile = yes; then
3938 LIBS_MAIL=-llockfile
3939 AC_DEFINE([HAVE_LIBLOCKFILE], [1],
3940 [Define to 1 if you have the 'lockfile' library (-llockfile).])
3942 # If we have the shared liblockfile, assume we must use it for mail
3943 # locking (e.g. Debian). If we couldn't link against liblockfile
3944 # (no liblockfile.a installed), ensure that we don't need to.
3945 dnl This works for files generally, not just executables.
3946 dnl Should we look elsewhere for it? Maybe examine /etc/ld.so.conf?
3947 AC_CHECK_PROG([liblockfile], [liblockfile.so], [yes], [no],
3948 [/usr/lib:/lib:/usr/local/lib:$LD_LIBRARY_PATH])
3949 if test "$ac_cv_prog_liblockfile" = yes; then
3950 AC_MSG_ERROR([Shared liblockfile found but can't link against it.
3951 This probably means that movemail could lose mail.
3952 There may be a 'development' package to install containing liblockfile.])
3955 AC_CHECK_HEADERS([maillock.h])
3957 ## Define MAIL_USE_FLOCK (or LOCKF) if the mailer uses flock (or lockf) to
3958 ## interlock access to the mail spool. The alternative is a lock file named
3959 ## /usr/spool/mail/$USER.lock.
3962 aix4-2) mail_lock="lockf" ;;
3964 gnu|freebsd|dragonfly|netbsd|openbsd|darwin) mail_lock="flock" ;;
3966 ## On GNU/Linux systems, both methods are used by various mail programs.
3967 ## I assume most people are using newer mailers that have heard of flock.
3968 ## Change this if you need to.
3969 ## Debian contains a patch which says: "On Debian/GNU/Linux systems,
3970 ## configure gets the right answers, and that means *NOT* using flock.
3971 ## Using flock is guaranteed to be the wrong thing. See Debian Policy
3972 ## for details." and then uses '#ifdef DEBIAN'. Unfortunately the
3973 ## Debian maintainer hasn't provided a clean fix for Emacs.
3974 ## movemail.c will use 'maillock' when MAILDIR, HAVE_LIBMAIL and
3975 ## HAVE_MAILLOCK_H are defined, so the following appears to be the
3976 ## correct logic. -- fx
3977 ## We must check for HAVE_LIBLOCKFILE too, as movemail does.
3978 ## liblockfile is a Free Software replacement for libmail, used on
3979 ## Debian systems and elsewhere. -rfr.
3982 if test $have_mail = yes || test $have_lockfile = yes; then
3983 test $ac_cv_header_maillock_h = yes && mail_lock=no
3987 mail_lock="none-needed" ;;
3991 flock) AC_DEFINE([MAIL_USE_FLOCK], [1],
3992 [Define if the mailer uses flock to interlock the mail spool.]);;
3994 lockf) AC_DEFINE([MAIL_USE_LOCKF], [1],
3995 [Define if the mailer uses lockf to interlock the mail spool.]);;
3999 *) BLESSMAIL_TARGET="need-blessmail" ;;
4002 AC_SUBST([BLESSMAIL_TARGET])
4003 AC_SUBST([LIBS_MAIL])
4006 LIBS="$LIB_PTHREAD $LIB_MATH $LIBS"
4007 AC_CHECK_FUNCS(accept4 fchdir gethostname \
4008 getrusage get_current_dir_name \
4009 lrand48 random rint trunc \
4010 select getpagesize setlocale newlocale \
4011 getrlimit setrlimit shutdown \
4012 pthread_sigmask strsignal setitimer \
4013 sendto recvfrom getsockname getifaddrs freeifaddrs \
4015 getpwent endpwent getgrent endgrent \
4016 cfmakeraw cfsetspeed __executable_start log2 prctl)
4019 dnl No need to check for posix_memalign if aligned_alloc works.
4020 AC_CHECK_FUNCS([aligned_alloc posix_memalign], [break])
4021 AC_CHECK_DECLS([aligned_alloc], [], [], [[#include <stdlib.h>]])
4023 dnl Cannot use AC_CHECK_FUNCS
4024 AC_CACHE_CHECK([for __builtin_frame_address],
4025 [emacs_cv_func___builtin_frame_address],
4026 [AC_LINK_IFELSE([AC_LANG_PROGRAM([], [__builtin_frame_address (0);])],
4027 [emacs_cv_func___builtin_frame_address=yes],
4028 [emacs_cv_func___builtin_frame_address=no])])
4029 if test $emacs_cv_func___builtin_frame_address = yes; then
4030 AC_DEFINE([HAVE___BUILTIN_FRAME_ADDRESS], 1,
4031 [Define to 1 if you have the '__builtin_frame_address' function.])
4033 AC_CACHE_CHECK([for __builtin_unwind_init],
4034 emacs_cv_func___builtin_unwind_init,
4035 [AC_LINK_IFELSE([AC_LANG_PROGRAM([], [__builtin_unwind_init ();])],
4036 emacs_cv_func___builtin_unwind_init=yes,
4037 emacs_cv_func___builtin_unwind_init=no)])
4038 if test $emacs_cv_func___builtin_unwind_init = yes; then
4039 AC_DEFINE(HAVE___BUILTIN_UNWIND_INIT, 1,
4040 [Define to 1 if you have the '__builtin_unwind_init' function.])
4043 AC_CHECK_HEADERS_ONCE(sys/un.h)
4048 AC_CHECK_FUNCS(grantpt)
4050 # PTY-related GNU extensions.
4051 AC_CHECK_FUNCS(getpt posix_openpt)
4053 dnl Run a test program that contains a call to tputs, a call that is
4054 dnl never executed. This tests whether a pre-'main' dynamic linker
4055 dnl works with the library. It's too much trouble to actually call
4056 dnl tputs in the test program, due to portability hassles. When
4057 dnl cross-compiling, assume the test program will run if it links.
4058 AC_DEFUN([tputs_link_source], [
4060 [[extern void tputs (const char *, int, int (*)(int));
4061 int main (int argc, char **argv)
4064 tputs (argv[0], 0, 0);
4068 # Check this now, so that we will NOT find the above functions in ncurses.
4069 # That is because we have not set up to link ncurses in lib-src.
4070 # It's better to believe a function is not available
4071 # than to expect to find it in ncurses.
4072 # Also we need tputs and friends to be able to build at all.
4073 AC_CACHE_CHECK([for library containing tputs], [emacs_cv_tputs_lib],
4074 [if test "${opsys}" = "mingw32"; then
4075 emacs_cv_tputs_lib='none required'
4077 # curses precedes termcap because of AIX (Bug#9736#35) and OpenIndiana.
4078 for tputs_library in '' tinfo ncurses terminfo curses termcap; do
4080 if test -z "$tputs_library"; then
4081 emacs_cv_tputs_lib='none required'
4083 emacs_cv_tputs_lib=-l$tputs_library
4084 LIBS="$emacs_cv_tputs_lib $LIBS"
4086 AC_RUN_IFELSE([tputs_link_source], [], [emacs_cv_tputs_lib=no],
4087 [AC_LINK_IFELSE([tputs_link_source], [], [emacs_cv_tputs_lib=no])])
4089 if test "X$emacs_cv_tputs_lib" != Xno; then
4094 AS_CASE(["$emacs_cv_tputs_lib"],
4095 [no], [AC_MSG_ERROR([The required function 'tputs' was not found in any library.
4096 The following libraries were tried (in order):
4097 libtinfo, libncurses, libterminfo, libcurses, libtermcap
4098 Please try installing whichever of these libraries is most appropriate
4099 for your system, together with its header files.
4100 For example, a libncurses-dev(el) or similar package.])],
4101 [-l*], [LIBS_TERMCAP=$emacs_cv_tputs_lib],
4102 [*], [LIBS_TERMCAP=])
4104 ## Use termcap instead of terminfo?
4105 ## Only true for: freebsd < 40000, ms-w32, msdos, netbsd < 599002500.
4107 ## FIXME? In the cases below where we unconditionally set
4108 ## LIBS_TERMCAP="-lncurses", this overrides LIBS_TERMCAP = -ltinfo,
4109 ## if that was found above to have tputs.
4110 ## Should we use the gnu* logic everywhere?
4112 ## darwin: Prevents crashes when running Emacs in Terminal.app under 10.2.
4113 ## The ncurses library has been moved out of the System framework in
4114 ## Mac OS X 10.2. So if configure detects it, set the command-line
4115 ## option to use it.
4116 darwin) LIBS_TERMCAP="-lncurses" ;;
4118 gnu*) test -z "$LIBS_TERMCAP" && LIBS_TERMCAP="-lncurses" ;;
4121 AC_MSG_CHECKING([whether FreeBSD is new enough to use terminfo])
4122 AC_CACHE_VAL(emacs_cv_freebsd_terminfo,
4123 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <osreldate.h>]],
4124 [[#if __FreeBSD_version < 400000
4127 ]])], emacs_cv_freebsd_terminfo=yes, emacs_cv_freebsd_terminfo=no)])
4129 AC_MSG_RESULT($emacs_cv_freebsd_terminfo)
4131 if test $emacs_cv_freebsd_terminfo = yes; then
4132 LIBS_TERMCAP="-lncurses"
4135 LIBS_TERMCAP="-ltermcap"
4145 if test "x$LIBS_TERMCAP" != "x-lterminfo"; then
4147 LIBS_TERMCAP="-ltermcap"
4151 openbsd | dragonfly) LIBS_TERMCAP="-lncurses" ;;
4153 ## hpux: Make sure we get select from libc rather than from libcurses
4154 ## because libcurses on HPUX 10.10 has a broken version of select.
4155 ## We used to use -lc -lcurses, but this may be cleaner.
4156 ## FIXME? But TERMINFO = yes on hpux (it used to be explicitly
4157 # set that way, now it uses the default). Isn't this a contradiction?
4158 hpux*) LIBS_TERMCAP="-ltermcap" ;;
4162 TERMCAP_OBJ=tparam.o
4163 if test $TERMINFO = yes; then
4164 AC_DEFINE(TERMINFO, 1, [Define to 1 if you use terminfo instead of termcap.])
4165 TERMCAP_OBJ=terminfo.o
4167 if test "X$LIBS_TERMCAP" = "X-lncurses"; then
4168 AC_DEFINE(USE_NCURSES, 1, [Define to 1 if you use ncurses.])
4170 AC_SUBST(LIBS_TERMCAP)
4171 AC_SUBST(TERMCAP_OBJ)
4173 # GNU/Linux-specific timer functions.
4174 AC_CACHE_CHECK([for timerfd interface], [emacs_cv_have_timerfd],
4176 [AC_LANG_PROGRAM([[#include <sys/timerfd.h>
4178 [[timerfd_create (CLOCK_REALTIME,
4179 TFD_CLOEXEC | TFD_NONBLOCK);
4180 timerfd_settime (0, TFD_TIMER_ABSTIME, 0, 0);]])],
4181 [emacs_cv_have_timerfd=yes],
4182 [emacs_cv_have_timerfd=no])])
4183 if test "$emacs_cv_have_timerfd" = yes; then
4184 AC_DEFINE([HAVE_TIMERFD], 1,
4185 [Define to 1 if timerfd functions are supported as in GNU/Linux.])
4188 # Alternate stack for signal handlers.
4189 AC_CACHE_CHECK([whether signals can be handled on alternate stack],
4190 [emacs_cv_alternate_stack],
4192 [AC_LANG_PROGRAM([[#include <signal.h>
4195 struct sigaction sa;
4196 ss.ss_sp = malloc (SIGSTKSZ);
4197 ss.ss_size = SIGSTKSZ;
4198 sa.sa_flags = SA_SIGINFO | SA_ONSTACK;
4199 sigaltstack (&ss, 0);
4200 sigaction (SIGSEGV, &sa, 0);]])],
4201 [emacs_cv_alternate_stack=yes],
4202 [emacs_cv_alternate_stack=no])])
4204 # Do we need the Hesiod library to provide the support routines?
4205 dnl FIXME? Should we be skipping this on Darwin too?
4208 if test "$with_hesiod" != no ; then
4209 # Don't set $LIBS here -- see comments above. FIXME which comments?
4211 AC_CHECK_FUNC(res_send, , [AC_CHECK_FUNC(__res_send, ,
4212 [AC_CHECK_LIB(resolv, res_send, resolv=yes,
4213 [AC_CHECK_LIB(resolv, __res_send, resolv=yes)])])])
4214 if test "$resolv" = yes ; then
4220 AC_CHECK_FUNC(hes_getmailhost, , [AC_CHECK_LIB(hesiod, hes_getmailhost,
4221 hesiod=yes, :, $RESOLVLIB)])
4223 if test x"$hesiod" = xyes; then
4225 LIBRESOLV=$RESOLVLIB
4231 # These tell us which Kerberos-related libraries to use.
4238 if test "${with_kerberos}" != no; then
4240 AC_CHECK_LIB(com_err, com_err, have_com_err=yes, have_com_err=no)
4241 if test $have_com_err = yes; then
4242 COM_ERRLIB=-lcom_err
4243 LIBS="$COM_ERRLIB $LIBS"
4245 AC_CHECK_LIB(crypto, mit_des_cbc_encrypt, have_crypto=yes, have_crypto=no)
4246 if test $have_crypto = yes; then
4248 LIBS="$CRYPTOLIB $LIBS"
4250 AC_CHECK_LIB(k5crypto, mit_des_cbc_encrypt, have_k5crypto=yes, have_k5crypto=no)
4251 if test $have_k5crypto = yes; then
4252 CRYPTOLIB=-lk5crypto
4253 LIBS="$CRYPTOLIB $LIBS"
4255 AC_CHECK_LIB(krb5, krb5_init_context, have_krb5=yes, have_krb5=no)
4256 if test $have_krb5=yes; then
4258 LIBS="$KRB5LIB $LIBS"
4260 dnl FIXME Simplify. Does not match 22 logic, thanks to default_off?
4261 if test "${with_kerberos5}" = no; then
4262 AC_CHECK_LIB(des425, des_cbc_encrypt, have_des425=yes, have_des425=no )
4263 if test $have_des425 = yes; then
4265 LIBS="$DESLIB $LIBS"
4267 AC_CHECK_LIB(des, des_cbc_encrypt, have_des=yes, have_des=no)
4268 if test $have_des = yes; then
4270 LIBS="$DESLIB $LIBS"
4273 AC_CHECK_LIB(krb4, krb_get_cred, have_krb4=yes, have_krb4=no)
4274 if test $have_krb4 = yes; then
4276 LIBS="$KRB4LIB $LIBS"
4278 AC_CHECK_LIB(krb, krb_get_cred, have_krb=yes, have_krb=no)
4279 if test $have_krb = yes; then
4281 LIBS="$KRB4LIB $LIBS"
4286 if test "${with_kerberos5}" != no; then
4287 AC_CHECK_HEADERS(krb5.h,
4288 [AC_CHECK_MEMBERS([krb5_error.text, krb5_error.e_text],,,
4289 [#include <krb5.h>])])
4291 AC_CHECK_HEADERS(krb.h,,
4292 [AC_CHECK_HEADERS(kerberosIV/krb.h,,
4293 [AC_CHECK_HEADERS(kerberos/krb.h)])])
4295 AC_CHECK_HEADERS(com_err.h)
4299 AC_SUBST(COM_ERRLIB)
4305 AC_CHECK_HEADERS(valgrind/valgrind.h)
4307 AC_CHECK_MEMBERS([struct unipair.unicode], [], [], [[#include <linux/kd.h>]])
4309 AC_CHECK_FUNCS_ONCE([sbrk])
4312 AC_CHECK_FUNC(socket, , ok_so_far=no)
4313 if test $ok_so_far = yes; then
4314 AC_CHECK_HEADER(netinet/in.h, , ok_so_far=no)
4316 if test $ok_so_far = yes; then
4317 AC_CHECK_HEADER(arpa/inet.h, , ok_so_far=no)
4319 if test $ok_so_far = yes; then
4320 dnl Fixme: Not used. Should this be HAVE_SOCKETS?
4321 AC_DEFINE(HAVE_INET_SOCKETS, 1,
4322 [Define to 1 if you have inet sockets.])
4327 AC_CHECK_FUNCS(snprintf)
4329 dnl Check for glib. This differs from other library checks in that
4330 dnl Emacs need not link to glib unless some other library is already
4331 dnl linking to glib. Although glib provides no facilities that Emacs
4332 dnl needs for its own purposes, when glib is present Emacs needs to
4333 dnl use primitives like g_main_context_query to avoid clashing with
4334 dnl glib at a low level.
4336 dnl Check this late, since it depends on $GTK_CFLAGS etc.
4338 AC_CACHE_CHECK([whether GLib is linked in], [emacs_cv_links_glib],
4339 [OLDCFLAGS="$CFLAGS"
4341 CFLAGS="$CFLAGS $GTK_CFLAGS $RSVG_CFLAGS $DBUS_CFLAGS $SETTINGS_CFLAGS"
4342 LIBS="$LIBS $GTK_LIBS $RSVG_LIBS $DBUS_LIBS $SETTINGS_LIBS"
4343 CFLAGS="$CFLAGS $NOTIFY_CFLAGS $CAIRO_CFLAGS"
4344 LIBS="$LIBS $NOTIFY_LIBS $CAIRO_LIBS"
4345 AC_LINK_IFELSE([AC_LANG_PROGRAM(
4348 [[g_print ("Hello world");]])],
4349 [emacs_cv_links_glib=yes],
4350 [emacs_cv_links_glib=no])
4353 if test "${emacs_cv_links_glib}" = "yes"; then
4354 AC_DEFINE(HAVE_GLIB, 1, [Define to 1 if GLib is linked in.])
4355 if test "$HAVE_NS" = no;then
4361 dnl Adapted from Haible's version.
4362 AC_CACHE_CHECK([for nl_langinfo and CODESET], emacs_cv_langinfo_codeset,
4363 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <langinfo.h>]],
4364 [[char* cs = nl_langinfo(CODESET);]])],
4365 emacs_cv_langinfo_codeset=yes,
4366 emacs_cv_langinfo_codeset=no)
4368 if test $emacs_cv_langinfo_codeset = yes; then
4369 AC_DEFINE(HAVE_LANGINFO_CODESET, 1,
4370 [Define if you have <langinfo.h> and nl_langinfo(CODESET).])
4375 dnl Fixme: AC_SYS_POSIX_TERMIOS should probably be used, but it's not clear
4376 dnl how the tty code is related to POSIX and/or other versions of termios.
4377 dnl The following looks like a useful start.
4379 dnl AC_SYS_POSIX_TERMIOS
4380 dnl if test $ac_cv_sys_posix_termios = yes; then
4381 dnl AC_DEFINE(HAVE_TERMIOS, 1, [Define to 1 if you have POSIX-style functions
4382 dnl and macros for terminal control.])
4383 dnl AC_DEFINE(HAVE_TCATTR, 1, [Define to 1 if you have tcgetattr and tcsetattr.])
4386 dnl Turned on June 1996 supposing nobody will mind it.
4387 dnl MinGW emulates passwd database, so this feature doesn't make sense there.
4388 if test "${opsys}" != "mingw32"; then
4389 AC_DEFINE(AMPERSAND_FULL_NAME, 1, [Define to use the convention that &
4390 in the full name stands for the login id.])
4393 dnl Everybody supports this, except MS.
4394 dnl Seems like the kind of thing we should be testing for, though.
4395 ## Note: PTYs are broken on darwin <6. Use at your own risk.
4396 if test "${opsys}" != "mingw32"; then
4397 AC_DEFINE(HAVE_PTYS, 1, [Define if the system supports pty devices.])
4400 dnl Everybody supports this, except MS-DOS.
4401 dnl Seems like the kind of thing we should be testing for, though.
4402 dnl Compare with HAVE_INET_SOCKETS (which is unused...) above.
4403 AC_DEFINE(HAVE_SOCKETS, 1, [Define if the system supports
4404 4.2-compatible sockets.])
4406 AH_TEMPLATE(INTERNAL_TERMINAL, [This is substituted when $TERM is "internal".])
4408 AH_TEMPLATE(NULL_DEVICE, [Name of the file to open to get
4409 a null file, or a data sink.])
4410 if test "${opsys}" = "mingw32"; then
4411 AC_DEFINE(NULL_DEVICE, ["NUL:"])
4413 AC_DEFINE(NULL_DEVICE, ["/dev/null"])
4416 if test "${opsys}" = "mingw32"; then
4421 AC_DEFINE_UNQUOTED(SEPCHAR, ['$SEPCHAR'], [Character that separates PATH elements.])
4422 dnl This is for MinGW, and is used in test/Makefile.in.
4423 dnl The MSYS Bash has heuristics for replacing ':' with ';' when it
4424 dnl decides that a command-line argument to be passed to a MinGW program
4425 dnl is a PATH-style list of directories. But that heuristics plays it
4426 dnl safe, and only does the replacement when it is _absolutely_ sure it
4427 dnl sees a colon-separated list of file names; e.g. ":." is left alone,
4428 dnl which breaks in-tree builds. So we do this manually instead.
4429 dnl Note that we cannot rely on PATH_SEPARATOR, as that one will always
4430 dnl be computed as ':' in MSYS Bash.
4433 dnl Everybody supports this, except MS-DOS.
4434 AC_DEFINE(subprocesses, 1, [Define to enable asynchronous subprocesses.])
4436 AC_DEFINE(USER_FULL_NAME, [pw->pw_gecos], [How to get a user's full name.])
4439 AC_DEFINE(DIRECTORY_SEP, ['/'],
4440 [Character that separates directories in a file name.])
4442 if test "${opsys}" = "mingw32"; then
4443 AC_DEFINE(IS_DEVICE_SEP(_c_), [((_c_) == ':')],
4444 [Returns true if character is a device separator.])
4446 AC_DEFINE(IS_DIRECTORY_SEP(_c_), [((_c_) == '/' || (_c_) == '\\')],
4447 [Returns true if character is a directory separator.])
4449 AC_DEFINE(IS_ANY_SEP(_c_), [(IS_DIRECTORY_SEP (_c_) || IS_DEVICE_SEP(_c_))],
4450 [Returns true if character is any form of separator.])
4452 AC_DEFINE(IS_DEVICE_SEP(_c_), 0,
4453 [Returns true if character is a device separator.])
4455 AC_DEFINE(IS_DIRECTORY_SEP(_c_), [((_c_) == DIRECTORY_SEP)],
4456 [Returns true if character is a directory separator.])
4458 AC_DEFINE(IS_ANY_SEP(_c_), [(IS_DIRECTORY_SEP (_c_))],
4459 [Returns true if character is any form of separator.])
4462 if test "$USE_X_TOOLKIT" != "none"; then
4466 dnl Assar Westerlund <assar@sics.se> says this is necessary
4467 dnl for HP-UX 10.20, and that it works for HP-UX 0 as well.
4471 if test "$have_editres" != no && test ! -z "$LIBXMU"; then
4473 dnl See libXmu.a check above.
4474 if test x$HAVE_X11XTR6 = xyes; then
4475 LIBS="-lXt -lSM -lICE $LIBXMU"
4477 OTHERLIBS="-lXt -$LIBXMU"
4480 [#include <X11/Intrinsic.h>
4481 #include <X11/Xmu/Editres.h>],
4482 [_XEditResCheckMessages (0, 0, 0, 0);],
4483 [AC_DEFINE([X_TOOLKIT_EDITRES], 1,
4484 [Define to 1 if we should use XEditRes.])])
4491 dnl Some SVr4s don't define NSIG in sys/signal.h for ANSI environments;
4492 dnl instead, there's a system variable _sys_nsig. Unfortunately, we
4493 dnl need the constant to dimension an array. So wire in the appropriate
4495 AC_DEFINE(NSIG_MINIMUM, 32, [Minimum value of NSIG.])
4499 emacs_broken_SIGIO=no
4502 dnl SIGIO exists, but the feature doesn't work in the way Emacs needs.
4503 hpux* | nacl | openbsd | sol2* | unixware )
4504 emacs_broken_SIGIO=yes
4508 dnl On AIX Emacs uses the gmalloc.c malloc implementation. But given
4509 dnl the way this system works, libc functions that return malloced
4510 dnl memory use the libc malloc implementation. Calling xfree or
4511 dnl xrealloc on the results of such functions results in a crash.
4513 dnl One solution for this could be to define SYSTEM_MALLOC in configure,
4514 dnl but that does not currently work on this system.
4516 dnl It is possible to completely override the malloc implementation on
4517 dnl AIX, but that involves putting the malloc functions in a shared
4518 dnl library and setting the MALLOCTYPE environment variable to point to
4519 dnl that shared library.
4521 dnl Emacs currently calls xrealloc on the results of get_current_dir name,
4522 dnl to avoid a crash just use the Emacs implementation for that function.
4524 dnl FIXME We could change the AC_CHECK_FUNCS call near the start
4525 dnl of this file, so that we do not check for get_current_dir_name
4526 dnl on AIX. But that might be fragile if something else ends
4527 dnl up testing for get_current_dir_name as a dependency.
4528 AC_DEFINE(BROKEN_GET_CURRENT_DIR_NAME, 1, [Define if
4529 get_current_dir_name should not be used.])
4533 dnl Circumvent a bug in FreeBSD. In the following sequence of
4534 dnl writes/reads on a PTY, read(2) returns bogus data:
4536 dnl write(2) 1022 bytes
4537 dnl write(2) 954 bytes, get EAGAIN
4538 dnl read(2) 1024 bytes in process_read_output
4539 dnl read(2) 11 bytes in process_read_output
4541 dnl That is, read(2) returns more bytes than have ever been written
4542 dnl successfully. The 1033 bytes read are the 1022 bytes written
4543 dnl successfully after processing (for example with CRs added if the
4544 dnl terminal is set up that way which it is here). The same bytes will
4545 dnl be seen again in a later read(2), without the CRs.
4546 AC_DEFINE(BROKEN_PTY_READ_AFTER_EAGAIN, 1, [Define on FreeBSD to
4547 work around an issue when reading from a PTY.])
4553 dnl FIXME Can't we test if this exists (eg /proc/$$)?
4554 AC_DEFINE(HAVE_PROCFS, 1, [Define if you have the /proc filesystem.])
4559 darwin | dragonfly | freebsd | netbsd | openbsd )
4560 AC_DEFINE(DONT_REOPEN_PTY, 1, [Define if process.c does not need to
4561 close a pty to make it a controlling terminal (it is already a
4562 controlling terminal of the subprocess, because we did ioctl TIOCSCTTY).])
4566 dnl FIXME Surely we can test for this rather than hard-code it.
4568 netbsd | openbsd) sound_device="/dev/audio" ;;
4569 *) sound_device="/dev/dsp" ;;
4573 AC_DEFINE_UNQUOTED(DEFAULT_SOUND_DEVICE, "$sound_device",
4574 [Name of the default sound device.])
4577 dnl Emacs can read input using SIGIO and buffering characters itself,
4578 dnl or using CBREAK mode and making C-g cause SIGINT.
4579 dnl The choice is controlled by the variable interrupt_input.
4581 dnl Define INTERRUPT_INPUT to make interrupt_input = 1 the default (use SIGIO)
4583 dnl Emacs uses the presence of the USABLE_SIGIO macro
4584 dnl to indicate whether or not signal-driven I/O is possible. It uses
4585 dnl INTERRUPT_INPUT to decide whether to use it by default.
4587 dnl SIGIO can be used only on systems that implement it (4.2 and 4.3).
4588 dnl CBREAK mode has two disadvantages
4589 dnl 1) At least in 4.2, it is impossible to handle the Meta key properly.
4590 dnl I hear that in system V this problem does not exist.
4591 dnl 2) Control-G causes output to be discarded.
4592 dnl I do not know whether this can be fixed in system V.
4594 dnl Another method of doing input is planned but not implemented.
4595 dnl It would have Emacs fork off a separate process
4596 dnl to read the input and send it to the true Emacs process
4599 darwin | gnu-linux | gnu-kfreebsd )
4600 AC_DEFINE(INTERRUPT_INPUT, 1, [Define to read input using SIGIO.])
4605 dnl If the system's imake configuration file defines 'NeedWidePrototypes'
4606 dnl as 'NO', we must define NARROWPROTO manually. Such a define is
4607 dnl generated in the Makefile generated by 'xmkmf'. If we don't define
4608 dnl NARROWPROTO, we will see the wrong function prototypes for X functions
4609 dnl taking float or double parameters.
4611 cygwin|gnu|gnu-linux|gnu-kfreebsd|freebsd|netbsd|openbsd)
4612 AC_DEFINE(NARROWPROTO, 1, [Define if system's imake configuration
4613 file defines 'NeedWidePrototypes' as 'NO'.])
4618 dnl Used in process.c, this must be a loop, even if it only runs once.
4619 AH_TEMPLATE(PTY_ITERATION, [How to iterate over PTYs.])
4620 dnl Only used if !PTY_ITERATION. Iterate from FIRST_PTY_LETTER to z,
4621 dnl trying suffixes 0-16.
4622 AH_TEMPLATE(FIRST_PTY_LETTER, [Letter to use in finding device name of
4623 first PTY, if PTYs are supported.])
4624 AH_TEMPLATE(PTY_OPEN, [How to open a PTY, if non-standard.])
4625 AH_TEMPLATE(PTY_NAME_SPRINTF, [How to get the device name of the control
4626 end of a PTY, if non-standard.])
4627 AH_TEMPLATE(PTY_TTY_NAME_SPRINTF, [How to get device name of the tty
4628 end of a PTY, if non-standard.])
4632 AC_DEFINE(PTY_ITERATION, [int c; for (c = 0; !c ; c++)])
4633 dnl You allocate a pty by opening /dev/ptc to get the master side.
4634 dnl To get the name of the slave side, you just ttyname() the master side.
4635 AC_DEFINE(PTY_NAME_SPRINTF, [strcpy (pty_name, "/dev/ptc");])
4636 AC_DEFINE(PTY_TTY_NAME_SPRINTF, [strcpy (pty_name, ttyname (fd));])
4640 AC_DEFINE(PTY_ITERATION, [int i; for (i = 0; i < 1; i++)])
4641 dnl multi-line AC_DEFINEs are hard. :(
4642 AC_DEFINE(PTY_OPEN, [ do { int dummy; sigset_t blocked, procmask; sigemptyset (&blocked); sigaddset (&blocked, SIGCHLD); pthread_sigmask (SIG_BLOCK, &blocked, &procmask); if (-1 == openpty (&fd, &dummy, pty_name, 0, 0)) fd = -1; pthread_sigmask (SIG_SETMASK, &procmask, 0); if (fd >= 0) emacs_close (dummy); } while (false)])
4643 AC_DEFINE(PTY_NAME_SPRINTF, [])
4644 AC_DEFINE(PTY_TTY_NAME_SPRINTF, [])
4647 gnu | openbsd | qnxnto )
4648 AC_DEFINE(FIRST_PTY_LETTER, ['p'])
4651 gnu-linux | gnu-kfreebsd | dragonfly | freebsd | netbsd | darwin | nacl )
4653 if test "x$ac_cv_func_grantpt" = xyes; then
4654 AC_DEFINE(UNIX98_PTYS, 1, [Define if the system has Unix98 PTYs.])
4655 AC_DEFINE(PTY_ITERATION, [int i; for (i = 0; i < 1; i++)])
4656 dnl Note that grantpt and unlockpt may fork. We must block SIGCHLD
4657 dnl to prevent sigchld_handler from intercepting the child's death.
4658 AC_DEFINE(PTY_TTY_NAME_SPRINTF, [{ char *ptyname = 0; sigset_t blocked; sigemptyset (&blocked); sigaddset (&blocked, SIGCHLD); pthread_sigmask (SIG_BLOCK, &blocked, 0); if (grantpt (fd) != -1 && unlockpt (fd) != -1) ptyname = ptsname(fd); pthread_sigmask (SIG_UNBLOCK, &blocked, 0); if (!ptyname) { emacs_close (fd); return -1; } snprintf (pty_name, PTY_NAME_SIZE, "%s", ptyname); }])
4659 dnl if HAVE_POSIX_OPENPT
4660 if test "x$ac_cv_func_posix_openpt" = xyes; then
4661 AC_DEFINE(PTY_OPEN, [do { fd = posix_openpt (O_RDWR | O_CLOEXEC | O_NOCTTY); if (fd < 0 && errno == EINVAL) fd = posix_openpt (O_RDWR | O_NOCTTY); } while (false)])
4662 AC_DEFINE(PTY_NAME_SPRINTF, [])
4664 elif test "x$ac_cv_func_getpt" = xyes; then
4665 AC_DEFINE(PTY_OPEN, [fd = getpt ()])
4666 AC_DEFINE(PTY_NAME_SPRINTF, [])
4668 AC_DEFINE(PTY_NAME_SPRINTF, [strcpy (pty_name, "/dev/ptmx");])
4671 AC_DEFINE(FIRST_PTY_LETTER, ['p'])
4676 AC_DEFINE(FIRST_PTY_LETTER, ['p'])
4677 AC_DEFINE(PTY_NAME_SPRINTF, [sprintf (pty_name, "/dev/ptym/pty%c%x", c, i);])
4678 AC_DEFINE(PTY_TTY_NAME_SPRINTF, [sprintf (pty_name, "/dev/pty/tty%c%x", c, i);])
4682 dnl On SysVr4, grantpt(3) forks a subprocess, so do not use
4683 dnl O_CLOEXEC when opening the pty, and keep the SIGCHLD handler
4684 dnl from intercepting that death. If any child but grantpt's should die
4685 dnl within, it should be caught after sigrelse(2).
4686 AC_DEFINE(PTY_OPEN, [fd = open (pty_name, O_RDWR | O_NONBLOCK)])
4687 AC_DEFINE(PTY_TTY_NAME_SPRINTF, [{ char *ptsname (int), *ptyname; int grantpt_result; sigset_t blocked; sigemptyset (&blocked); sigaddset (&blocked, SIGCHLD); pthread_sigmask (SIG_BLOCK, &blocked, 0); grantpt_result = grantpt (fd); pthread_sigmask (SIG_UNBLOCK, &blocked, 0); if (grantpt_result == -1 || unlockpt (fd) == -1 || !(ptyname = ptsname (fd))) { emacs_close (fd); return -1; } snprintf (pty_name, PTY_NAME_SIZE, "%s", ptyname); }])
4691 dnl Comments are as per sol2*.
4692 AC_DEFINE(PTY_OPEN, [fd = open (pty_name, O_RDWR | O_NONBLOCK)])
4693 AC_DEFINE(PTY_TTY_NAME_SPRINTF, [{ char *ptsname (int), *ptyname; int grantpt_result; sigset_t blocked; sigemptyset (&blocked); sigaddset (&blocked, SIGCHLD); pthread_sigmask (SIG_BLOCK, &blocked, 0); grantpt_result = grantpt (fd); pthread_sigmask (SIG_UNBLOCK, &blocked, 0); if (grantpt_result == -1) fatal("could not grant slave pty"); if (unlockpt(fd) == -1) fatal("could not unlock slave pty"); if (!(ptyname = ptsname(fd))) fatal ("could not enable slave pty"); snprintf (pty_name, PTY_NAME_SIZE, "%s", ptyname); }])
4700 dnl This change means that we don't loop through allocate_pty too
4701 dnl many times in the (rare) event of a failure.
4702 AC_DEFINE(FIRST_PTY_LETTER, ['z'])
4703 AC_DEFINE(PTY_NAME_SPRINTF, [strcpy (pty_name, "/dev/ptmx");])
4704 dnl Push various streams modules onto a PTY channel. Used in process.c.
4705 AC_DEFINE(SETUP_SLAVE_PTY, [if (ioctl (forkin, I_PUSH, "ptem") == -1) fatal ("ioctl I_PUSH ptem"); if (ioctl (forkin, I_PUSH, "ldterm") == -1) fatal ("ioctl I_PUSH ldterm"); if (ioctl (forkin, I_PUSH, "ttcompat") == -1) fatal ("ioctl I_PUSH ttcompat");], [How to set up a slave PTY, if needed.])
4710 AH_TEMPLATE(SIGNALS_VIA_CHARACTERS, [Make process_send_signal work by
4711 "typing" a signal character on the pty.])
4714 dnl Perry Smith <pedz@ddivt1.austin.ibm.com> says this is correct for AIX.
4715 aix4-2 | cygwin | gnu | dragonfly | freebsd | netbsd | openbsd | darwin )
4716 AC_DEFINE(SIGNALS_VIA_CHARACTERS, 1)
4719 dnl 21 Jun 06: Eric Hanchrow <offby1@blarg.net> says this works.
4720 dnl FIXME Does gnu-kfreebsd have linux/version.h? It seems unlikely...
4721 gnu-linux | gnu-kfreebsd )
4723 AC_CACHE_CHECK([for signals via characters], [emacs_cv_signals_via_chars],
4724 [AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
4725 #include <linux/version.h>
4726 #if LINUX_VERSION_CODE < 0x20400
4727 # error "Linux version too old"
4729 ]], [[]])], emacs_cv_signals_via_chars=yes, emacs_cv_signals_via_chars=no)])
4731 test "$emacs_cv_signals_via_chars" = yes && AC_DEFINE(SIGNALS_VIA_CHARACTERS, 1)
4736 AH_TEMPLATE(TAB3, [Undocumented.])
4739 darwin) AC_DEFINE(TAB3, OXTABS) ;;
4741 gnu | dragonfly | freebsd | netbsd | openbsd )
4742 AC_DEFINE(TABDLY, OXTABS, [Undocumented.])
4743 AC_DEFINE(TAB3, OXTABS)
4746 gnu-linux | gnu-kfreebsd )
4747 AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
4751 ]], [[]])], AC_DEFINE(GC_MARK_SECONDARY_STACK(),
4752 [do { extern void *__libc_ia64_register_backing_store_base; __builtin_ia64_flushrs (); mark_memory (__libc_ia64_register_backing_store_base, __builtin_ia64_bsp ());} while (false)],
4753 [Mark a secondary stack, like the register stack on the ia64.]), [])
4757 AC_DEFINE(RUN_TIME_REMAP, 1, [Define if emacs.c needs to call
4758 run_time_remap; for HPUX.])
4763 dnl This won't be used automatically yet. We also need to know, at least,
4764 dnl that the stack is continuous.
4765 AH_TEMPLATE(GC_SETJMP_WORKS, [Define if setjmp is known to save all
4766 registers relevant for conservative garbage collection in the jmp_buf.])
4770 dnl Not all the architectures are tested, but there are Debian packages
4771 dnl for SCM and/or Guile on them, so the technique must work. See also
4772 dnl comments in alloc.c concerning setjmp and gcc.
4773 dnl Fixme: it's probably safe to just use the GCC conditional below.
4774 gnu-linux | gnu-kfreebsd )
4775 AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
4776 #if defined __i386__ || defined __sparc__ || defined __mc68000__ \
4777 || defined __alpha__ || defined __mips__ || defined __s390__ \
4778 || defined __arm__ || defined __powerpc__ || defined __amd64__ \
4779 || defined __ia64__ || defined __sh__
4782 # error "setjmp not known to work on this arch"
4784 ]], [[]])], AC_DEFINE(GC_SETJMP_WORKS, 1))
4789 if test x$GCC = xyes; then
4790 dnl GC_SETJMP_WORKS is nearly always appropriate for GCC.
4791 AC_DEFINE(GC_SETJMP_WORKS, 1)
4794 aix* | dragonfly | freebsd | netbsd | openbsd | sol2* )
4795 AC_DEFINE(GC_SETJMP_WORKS, 1)
4800 dnl In a weird quirk, MS runtime uses _setjmp and longjmp.
4801 AC_CACHE_CHECK([for _setjmp], [emacs_cv_func__setjmp],
4804 [[#include <setjmp.h>
4806 # define _longjmp longjmp
4811 _longjmp (j, 1);]])],
4812 [emacs_cv_func__setjmp=yes],
4813 [emacs_cv_func__setjmp=no])])
4814 if test $emacs_cv_func__setjmp = yes; then
4815 AC_DEFINE([HAVE__SETJMP], 1, [Define to 1 if _setjmp and _longjmp work.])
4818 # We need to preserve signal mask to handle C stack overflows.
4819 AC_CACHE_CHECK([for sigsetjmp], [emacs_cv_func_sigsetjmp],
4822 [[#include <setjmp.h>
4825 if (! sigsetjmp (j, 1))
4826 siglongjmp (j, 1);]])],
4827 [emacs_cv_func_sigsetjmp=yes],
4828 [emacs_cv_func_sigsetjmp=no])])
4829 if test $emacs_cv_func_sigsetjmp = yes; then
4830 AC_DEFINE([HAVE_SIGSETJMP], 1,
4831 [Define to 1 if sigsetjmp and siglongjmp work.])
4834 case $emacs_cv_func_sigsetjmp,$emacs_cv_alternate_stack,$opsys in
4835 yes,yes,* | *,*,mingw32)
4836 AC_DEFINE([HAVE_STACK_OVERFLOW_HANDLING], 1,
4837 [Define to 1 if C stack overflow can be handled in some cases.]);;
4842 dnl TIOCGPGRP is broken in SysVr4, so we can't send signals to PTY
4843 dnl subprocesses the usual way. But TIOCSIGNAL does work for PTYs,
4844 dnl and this is all we need.
4845 AC_DEFINE(TIOCSIGSEND, TIOCSIGNAL, [Some platforms redefine this.])
4852 dnl Used in xfaces.c.
4853 AC_DEFINE(XOS_NEEDS_TIME_H, 1, [Compensate for a bug in Xos.h on
4854 some systems, where it requires time.h.])
4859 dnl Define symbols to identify the version of Unix this is.
4860 dnl Define all the symbols that apply correctly.
4861 AH_TEMPLATE(DOS_NT, [Define if the system is MS DOS or MS Windows.])
4862 AH_TEMPLATE(MSDOS, [Define if the system is MS DOS.])
4863 AH_TEMPLATE(USG, [Define if the system is compatible with System III.])
4864 AH_TEMPLATE(USG5_4, [Define if the system is compatible with System V Release 4.])
4869 dnl This symbol should be defined on AIX Version 3 ???????
4870 AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
4872 # error "_AIX not defined"
4874 ]], [[]])], [], AC_DEFINE(_AIX, [], [Define if the system is AIX.]))
4878 AC_DEFINE(CYGWIN, 1, [Define if the system is Cygwin.])
4882 dnl Not __APPLE__, as this may not be defined on non-macOS Darwin.
4883 dnl Not DARWIN, because Panther and lower CoreFoundation.h use DARWIN to
4884 dnl distinguish macOS from pure Darwin.
4885 AC_DEFINE(DARWIN_OS, [], [Define if the system is Darwin.])
4888 gnu-linux | gnu-kfreebsd )
4890 AC_DEFINE(GNU_LINUX, [], [Define if ths system is compatible with GNU/Linux.])
4895 AC_DEFINE(HPUX, [], [Define if the system is HPUX.])
4899 AC_DEFINE(DOS_NT, [])
4900 AC_DEFINE(WINDOWSNT, 1, [Define if compiling for native MS Windows.])
4901 if test "x$ac_enable_checking" != "x" ; then
4902 AC_DEFINE(EMACSDEBUG, 1, [Define to 1 to enable w32 debug facilities.])
4908 AC_DEFINE(USG5_4, [])
4909 AC_DEFINE(SOLARIS2, [], [Define if the system is Solaris.])
4914 AC_DEFINE(USG5_4, [])
4918 AC_CACHE_CHECK([for usable FIONREAD], [emacs_cv_usable_FIONREAD],
4921 dnl BUILD 9008 - FIONREAD problem still exists in X-Windows.
4922 emacs_cv_usable_FIONREAD=no
4926 emacs_cv_usable_FIONREAD=yes
4931 [AC_LANG_PROGRAM([[#include <sys/types.h>
4932 #include <sys/ioctl.h>
4934 # include <sys/filio.h>
4937 [[int foo = ioctl (0, FIONREAD, &foo);]])],
4938 [emacs_cv_usable_FIONREAD=yes],
4939 [emacs_cv_usable_FIONREAD=no])
4942 if test $emacs_cv_usable_FIONREAD = yes; then
4943 AC_DEFINE([USABLE_FIONREAD], [1], [Define to 1 if FIONREAD is usable.])
4945 if test $emacs_broken_SIGIO = no; then
4946 AC_CACHE_CHECK([for usable SIGIO], [emacs_cv_usable_SIGIO],
4948 [AC_LANG_PROGRAM([[#include <fcntl.h>
4951 [[int foo = SIGIO | F_SETFL | FASYNC;]])],
4952 [emacs_cv_usable_SIGIO=yes],
4953 [emacs_cv_usable_SIGIO=no])],
4954 [emacs_cv_usable_SIGIO=yes],
4955 [emacs_cv_usable_SIGIO=no])
4956 if test $emacs_cv_usable_SIGIO = yes; then
4957 AC_DEFINE([USABLE_SIGIO], [1], [Define to 1 if SIGIO is usable.])
4964 dnl It works to open the pty's tty in the parent (Emacs), then
4965 dnl close and reopen it in the child.
4966 AC_DEFINE(USG_SUBTTY_WORKS, 1, [Define for USG systems where it
4967 works to open a pty's tty in the parent process, then close and
4968 reopen it in the child.])
4972 AC_DEFINE(_STRUCTURED_PROC, 1, [Needed for system_process_attributes
4977 # Set up the CFLAGS for real compilation, so we can substitute it.
4978 CFLAGS="$REAL_CFLAGS"
4979 CPPFLAGS="$REAL_CPPFLAGS"
4982 ## Hack to detect a buggy GCC version.
4983 if test "$GCC" = yes && \
4984 $CC --version 2> /dev/null | grep 'gcc.* 4.5.0' >/dev/null; then
4986 *-fno-optimize-sibling-calls*) ;;
4988 AC_MSG_ERROR([GCC 4.5.0 has problems compiling Emacs; see etc/PROBLEMS.]);;
4992 version=$PACKAGE_VERSION
4994 copyright="Copyright (C) 2018 Free Software Foundation, Inc."
4995 AC_DEFINE_UNQUOTED(COPYRIGHT, ["$copyright"],
4996 [Short copyright string for this version of Emacs.])
4999 ### Specify what sort of things we'll be editing into Makefile and config.h.
5000 ### Use configuration here uncanonicalized to avoid exceeding size limits.
5002 AC_SUBST(configuration)
5007 AC_SUBST(exec_prefix)
5010 AC_SUBST(sharedstatedir)
5011 AC_SUBST(libexecdir)
5015 AC_SUBST(standardlisppath)
5016 AC_SUBST(locallisppath)
5018 AC_SUBST(x_default_search_path)
5020 AC_SUBST(archlibdir)
5026 ## FIXME? Nothing uses @LD_SWITCH_X_SITE@.
5027 ## src/Makefile.in did add LD_SWITCH_X_SITE (as a cpp define) to the
5028 ## end of LIBX_BASE, but nothing ever set it.
5029 AC_SUBST(LD_SWITCH_X_SITE)
5030 AC_SUBST(C_SWITCH_X_SITE)
5031 AC_SUBST(GNUSTEP_CFLAGS)
5033 ## Used in lwlib/Makefile.in.
5034 AC_SUBST(X_TOOLKIT_TYPE)
5036 AC_SUBST(ns_appbindir)
5037 AC_SUBST(ns_appresdir)
5039 AC_SUBST(GNU_OBJC_CFLAGS)
5040 AC_SUBST(OTHER_FILES)
5042 if test -n "${term_header}"; then
5043 AC_DEFINE_UNQUOTED(TERM_HEADER, "${term_header}",
5044 [Define to the header for the built-in window system.])
5047 AC_DEFINE_UNQUOTED(EMACS_CONFIGURATION, "${canonical}",
5048 [Define to the canonical Emacs configuration name.])
5049 AC_DEFINE_UNQUOTED(EMACS_CONFIG_OPTIONS, "${emacs_config_options}",
5050 [Define to the options passed to configure.])
5055 if test "${HAVE_X_WINDOWS}" = "yes" ; then
5056 AC_DEFINE(HAVE_X_WINDOWS, 1,
5057 [Define to 1 if you want to use the X window system.])
5059 XOBJ="xterm.o xfns.o xselect.o xrdb.o xsmfns.o xsettings.o"
5061 if test "$HAVE_CAIRO" = "yes"; then
5062 FONT_OBJ="ftfont.o ftcrfont.o"
5063 elif test "$HAVE_XFT" = "yes"; then
5064 FONT_OBJ="$FONT_OBJ ftfont.o xftfont.o ftxfont.o"
5065 elif test "$HAVE_FREETYPE" = "yes"; then
5066 FONT_OBJ="$FONT_OBJ ftfont.o ftxfont.o"
5076 if test "${USE_X_TOOLKIT}" != "none" ; then
5078 AC_DEFINE(USE_X_TOOLKIT, 1, [Define to 1 if using an X toolkit.])
5079 if test "${USE_X_TOOLKIT}" = "LUCID"; then
5080 AC_DEFINE(USE_LUCID, 1, [Define to 1 if using the Lucid X toolkit.])
5081 elif test "${USE_X_TOOLKIT}" = "MOTIF"; then
5082 AC_DEFINE(USE_MOTIF, 1, [Define to 1 if using the Motif X toolkit.])
5086 ## Paul Abrahams <abrahams at equinox.shaysnet.com> says this is needed.
5087 MOTIF_LIBW="$MOTIF_LIBW -lXpm"
5091 ## Richard Anthony Ryan <ryanr at ellingtn.ftc.nrcs.usda.gov>
5092 ## says -lXimp is needed in UNIX_SV ... 4.2 1.1.2.
5093 MOTIF_LIBW="MOTIF_LIBW -lXimp"
5097 ## olson@mcs.anl.gov says -li18n is needed by -lXm.
5098 MOTIF_LIBW="$MOTIF_LIBW -li18n"
5101 MOTIF_LIBW="$MOTIF_LIBW $LIBXP"
5104 AC_SUBST(WIDGET_OBJ)
5107 case "$USE_X_TOOLKIT" in
5108 MOTIF) TOOLKIT_LIBW="$MOTIF_LIBW" ;;
5109 LUCID) TOOLKIT_LIBW="$LUCID_LIBW" ;;
5110 none) test "x$HAVE_GTK" = "xyes" && TOOLKIT_LIBW="$GTK_LIBS" ;;
5112 if test "$HAVE_XWIDGETS" = "yes"; then
5113 TOOLKIT_LIBW="$TOOLKIT_LIBW -lXcomposite"
5115 AC_SUBST(TOOLKIT_LIBW)
5117 if test "${opsys}" != "mingw32"; then
5118 if test "$USE_X_TOOLKIT" = "none"; then
5119 LIBXT_OTHER="\$(LIBXSM)"
5121 LIBXT_OTHER="\$(LIBXMU) -lXt \$(LIBXTR6) -lXext"
5124 AC_SUBST(LIBXT_OTHER)
5126 if test "${HAVE_X11}" = "yes" ; then
5127 AC_DEFINE(HAVE_X11, 1,
5128 [Define to 1 if you want to use version 11 of X windows.])
5129 LIBX_OTHER="\$(LIBXT) \$(LIBX_EXTRA)"
5133 AC_SUBST(LIBX_OTHER)
5136 if test "$HAVE_GTK" = yes || test "$HAVE_X11" != yes; then
5138 elif test "$USE_X_TOOLKIT" = none; then
5140 LIBXMENU='$(oldXMenudir)/libXMenu11.a'
5141 AUTODEPEND_PARENTS="$AUTODEPEND_PARENTS oldXMenu"
5143 LIBXMENU='$(lwlibdir)/liblw.a'
5144 AUTODEPEND_PARENTS="$AUTODEPEND_PARENTS lwlib"
5148 if test "${GNU_MALLOC}" = "yes" ; then
5149 AC_DEFINE(GNU_MALLOC, 1,
5150 [Define to 1 if you want to use the GNU memory allocator.])
5154 if test "${REL_ALLOC}" = "yes" ; then
5155 AC_DEFINE(REL_ALLOC, 1,
5156 [Define REL_ALLOC if you want to use the relocating allocator for
5159 test "$system_malloc" != "yes" && RALLOC_OBJ=ralloc.o
5161 AC_SUBST(RALLOC_OBJ)
5163 if test "$opsys" = "cygwin"; then
5164 CYGWIN_OBJ="cygw32.o"
5165 ## Cygwin differs because of its unexec().
5167 POST_ALLOC_OBJ=lastfile.o
5168 elif test "$opsys" = "mingw32"; then
5171 POST_ALLOC_OBJ=lastfile.o
5174 PRE_ALLOC_OBJ=lastfile.o
5177 AC_SUBST(CYGWIN_OBJ)
5178 AC_SUBST(PRE_ALLOC_OBJ)
5179 AC_SUBST(POST_ALLOC_OBJ)
5181 dnl Call this 'FORTIFY_SOUR' so that it sorts before the 'FORTIFY_SOURCE'
5182 dnl verbatim defined above. The tricky name is apropos, as this hack
5183 dnl makes Fortify go sour!
5184 AH_VERBATIM([FORTIFY_SOUR],
5185 [/* Without the following workaround, Emacs runs slowly on OS X 10.8.
5186 The workaround disables some useful run-time checking, so it
5187 should be conditional to the platforms with the performance bug.
5188 Perhaps Apple will fix this some day; also see m4/extern-inline.m4. */
5189 #if defined __APPLE__ && defined __GNUC__
5190 # ifndef _DONT_USE_CTYPE_INLINE_
5191 # define _DONT_USE_CTYPE_INLINE_
5193 # ifndef _FORTIFY_SOURCE
5194 # define _FORTIFY_SOURCE 0
5199 # If user asks to omit features, disable optional features that gnulib
5200 # might otherwise enable.
5201 if test "$with_features" = no && test "$enable_acl" != yes; then
5205 # Configure gnulib. Although this does not affect CFLAGS or LIBS permanently.
5206 # it temporarily reverts them to their pre-pkg-config values,
5207 # because gnulib needs to work with both src (which uses the
5208 # pkg-config stuff) and lib-src (which does not). For example, gnulib
5209 # may need to determine whether LIB_CLOCK_GETTIME should contain -lrt,
5210 # and it therefore needs to run in an environment where LIBS does not
5211 # already contain -lrt merely because 'pkg-config --libs' printed '-lrt'
5212 # for some package unrelated to lib-src.
5215 CFLAGS=$pre_PKG_CONFIG_CFLAGS
5216 LIBS="$LIB_PTHREAD $pre_PKG_CONFIG_LIBS"
5217 gl_ASSERT_NO_GNULIB_POSIXCHECK
5218 gl_ASSERT_NO_GNULIB_TESTS
5223 if test "${opsys}" = "mingw32"; then
5224 CPPFLAGS="$CPPFLAGS -DUSE_CRT_DLL=1 -I \${abs_top_srcdir}/nt/inc"
5225 # Remove unneeded switches from the value of CC that goes to Makefiles
5226 CC=`AS_ECHO(["$CC"]) | sed -e "s,$GCC_TEST_OPTIONS,,"`
5230 aix4-2) LD_SWITCH_SYSTEM_TEMACS="-Wl,-bnodelcsect" ;;
5232 cygwin) LD_SWITCH_SYSTEM_TEMACS="-Wl,-stack,0x00800000" ;;
5235 ## The -headerpad option tells ld (see man page) to leave room at the
5236 ## end of the header for adding load commands. Needed for dumping.
5237 ## 0x1000 is enough for roughly 52 load commands on the x86_64
5238 ## architecture (where they are 78 bytes each). The actual number of
5239 ## load commands added is not consistent but normally ranges from
5240 ## about 14 to about 34. Setting it high gets us plenty of slop and
5241 ## only costs about 1.5K of wasted binary space.
5242 headerpad_extra=1000
5243 if test "$HAVE_NS" = "yes"; then
5244 libs_nsgui="-framework AppKit"
5245 if test "$NS_IMPL_COCOA" = "yes"; then
5246 libs_nsgui="$libs_nsgui -framework IOKit -framework Carbon"
5251 LD_SWITCH_SYSTEM_TEMACS="-fno-pie -prebind $libs_nsgui -Xlinker -headerpad -Xlinker $headerpad_extra"
5253 ## This is here because src/Makefile.in did some extra fiddling around
5254 ## with LD_SWITCH_SYSTEM. It seems cleaner to put this in
5255 ## LD_SWITCH_SYSTEM_TEMACS instead,
5256 test "x$LD_SWITCH_SYSTEM" = "x" && test "x$GCC" != "xyes" && \
5257 LD_SWITCH_SYSTEM_TEMACS="-X $LD_SWITCH_SYSTEM_TEMACS"
5260 ## LD_SWITCH_X_SITE_RPATH is a -rpath option saying where to
5261 ## find X at run-time.
5262 ## When handled by cpp, this was in LD_SWITCH_SYSTEM. However, at the
5263 ## point where configure sourced the s/*.h file, LD_SWITCH_X_SITE_RPATH
5264 ## had not yet been defined and was expanded to null. Hence LD_SWITCH_SYSTEM
5265 ## had different values in configure (in ac_link) and src/Makefile.in.
5266 ## It seems clearer therefore to put this piece in LD_SWITCH_SYSTEM_TEMACS.
5267 gnu*) LD_SWITCH_SYSTEM_TEMACS="\$(LD_SWITCH_X_SITE_RPATH)" ;;
5270 ## Is it any better under MinGW64 to relocate emacs into higher addresses?
5271 case "$canonical" in
5272 x86_64-*-*) LD_SWITCH_SYSTEM_TEMACS="-Wl,-stack,0x00800000 -Wl,-heap,0x00100000 -Wl,-image-base,0x400000000 -Wl,-entry,__start -Wl,-Map,./temacs.map" ;;
5273 *) LD_SWITCH_SYSTEM_TEMACS="-Wl,-stack,0x00800000 -Wl,-heap,0x00100000 -Wl,-image-base,0x01000000 -Wl,-entry,__start -Wl,-Map,./temacs.map" ;;
5277 *) LD_SWITCH_SYSTEM_TEMACS= ;;
5280 # -no-pie or -nopie fixes a temacs segfault on Gentoo, OpenBSD,
5281 # Ubuntu, and other systems with "hardened" GCC configurations for
5282 # some reason (Bug#18784). We don't know why this works, but not
5283 # segfaulting is better than segfaulting. Use ac_c_werror_flag=yes
5284 # when trying the option, otherwise clang keeps warning that it does
5285 # not understand it, and pre-4.6 GCC has a similar problem
5286 # (Bug#20338). Prefer -no-pie to -nopie, as -no-pie is the
5287 # spelling used by GCC 6.1.0 and later (Bug#24682).
5289 [for $CC option to disable position independent executables],
5290 [emacs_cv_prog_cc_no_pie],
5291 [if test "$CANNOT_DUMP" = yes; then
5292 emacs_cv_prog_cc_no_pie='not needed'
5294 emacs_save_c_werror_flag=$ac_c_werror_flag
5295 emacs_save_LDFLAGS=$LDFLAGS
5296 ac_c_werror_flag=yes
5297 for emacs_cv_prog_cc_no_pie in -no-pie -nopie no; do
5298 test $emacs_cv_prog_cc_no_pie = no && break
5299 LDFLAGS="$emacs_save_LDFLAGS $emacs_cv_prog_cc_no_pie"
5300 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [break])
5302 ac_c_werror_flag=$emacs_save_c_werror_flag
5303 LDFLAGS=$emacs_save_LDFLAGS
5305 case $emacs_cv_prog_cc_no_pie in
5307 LD_SWITCH_SYSTEM_TEMACS="$LD_SWITCH_SYSTEM_TEMACS $emacs_cv_prog_cc_no_pie"
5311 if test x$ac_enable_profiling != x ; then
5313 *freebsd | gnu-linux) ;;
5314 *) LD_SWITCH_SYSTEM_TEMACS="$LD_SWITCH_SYSTEM_TEMACS -pg" ;;
5318 AC_SUBST(LD_SWITCH_SYSTEM_TEMACS)
5320 ## Common for all window systems
5321 if test "$window_system" != "none"; then
5322 AC_DEFINE(HAVE_WINDOW_SYSTEM, 1, [Define if you have a window system.])
5323 AC_DEFINE(POLL_FOR_INPUT, 1, [Define if you poll periodically to detect C-g.])
5324 WINDOW_SYSTEM_OBJ="fontset.o fringe.o image.o"
5327 AC_SUBST(WINDOW_SYSTEM_OBJ)
5329 AH_TOP([/* GNU Emacs site configuration template file.
5331 Copyright (C) 1988, 1993-1994, 1999-2002, 2004-2018
5332 Free Software Foundation, Inc.
5334 This file is part of GNU Emacs.
5336 GNU Emacs is free software: you can redistribute it and/or modify
5337 it under the terms of the GNU General Public License as published by
5338 the Free Software Foundation, either version 3 of the License, or (at
5339 your option) any later version.
5341 GNU Emacs is distributed in the hope that it will be useful,
5342 but WITHOUT ANY WARRANTY; without even the implied warranty of
5343 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
5344 GNU General Public License for more details.
5346 You should have received a copy of the GNU General Public License
5347 along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>. */
5350 /* No code in Emacs #includes config.h twice, but some bits of code
5351 intended to work with other packages as well (like gmalloc.c)
5352 think they can include it as many times as they like. */
5353 #ifndef EMACS_CONFIG_H
5354 #define EMACS_CONFIG_H
5357 AH_BOTTOM([#include <conf_post.h>
5359 #endif /* EMACS_CONFIG_H */
5368 #### Report on what we decided to do.
5369 #### Report GTK as a toolkit, even if it doesn't use Xt.
5370 #### It makes printing result more understandable as using GTK sets
5371 #### toolkit_scroll_bars to yes by default.
5372 if test "${HAVE_GTK}" = "yes"; then
5373 USE_X_TOOLKIT="$USE_GTK_TOOLKIT"
5376 if test $USE_ACL -ne 0; then
5377 ACL_SUMMARY="yes $LIB_ACL"
5382 emacs_standard_dirs='Standard dirs'
5384 Configured for '${canonical}'.
5386 Where should the build process find the source code? ${srcdir}
5387 What compiler should emacs be built with? ${CC} ${CFLAGS}
5388 Should Emacs use the GNU version of malloc? ${GNU_MALLOC}${GNU_MALLOC_reason}
5389 Should Emacs use a relocating allocator for buffers? ${REL_ALLOC}
5390 Should Emacs use mmap(2) for buffer allocation? $use_mmap_for_buffers
5391 What window system should Emacs use? ${window_system}
5392 What toolkit should Emacs use? ${USE_X_TOOLKIT}
5393 Where do we find X Windows header files? ${x_includes:-$emacs_standard_dirs}
5394 Where do we find X Windows libraries? ${x_libraries:-$emacs_standard_dirs}"])
5397 emacs_config_features=
5398 for opt in XAW3D XPM JPEG TIFF GIF PNG RSVG CAIRO IMAGEMAGICK SOUND GPM DBUS \
5399 GCONF GSETTINGS NOTIFY ACL LIBSELINUX GNUTLS LIBXML2 FREETYPE M17N_FLT \
5400 LIBOTF XFT ZLIB TOOLKIT_SCROLL_BARS X_TOOLKIT OLDXMENU X11 NS MODULES \
5401 THREADS XWIDGETS LIBSYSTEMD JSON CANNOT_DUMP LCMS2; do
5404 CANNOT_DUMP) eval val=\${$opt} ;;
5405 NOTIFY|ACL) eval val=\${${opt}_SUMMARY} ;;
5406 TOOLKIT_SCROLL_BARS|X_TOOLKIT) eval val=\${USE_$opt} ;;
5407 THREADS) val=${threads_enabled} ;;
5408 *) eval val=\${HAVE_$opt} ;;
5411 xno|xnone|x) continue ;;
5416 GTK*|LUCID|MOTIF) opt=$val ;;
5421 AS_VAR_APPEND([emacs_config_features], ["$optsep$opt"])
5424 AC_DEFINE_UNQUOTED(EMACS_CONFIG_FEATURES, "${emacs_config_features}",
5425 [Summary of some of the main features enabled by configure.])
5427 AS_ECHO([" Does Emacs use -lXaw3d? ${HAVE_XAW3D}
5428 Does Emacs use -lXpm? ${HAVE_XPM}
5429 Does Emacs use -ljpeg? ${HAVE_JPEG}
5430 Does Emacs use -ltiff? ${HAVE_TIFF}
5431 Does Emacs use a gif library? ${HAVE_GIF} $LIBGIF
5432 Does Emacs use a png library? ${HAVE_PNG} $LIBPNG
5433 Does Emacs use -lrsvg-2? ${HAVE_RSVG}
5434 Does Emacs use cairo? ${HAVE_CAIRO}
5435 Does Emacs use -llcms2? ${HAVE_LCMS2}
5436 Does Emacs use imagemagick (version 6)? ${HAVE_IMAGEMAGICK}
5437 Does Emacs support sound? ${HAVE_SOUND}
5438 Does Emacs use -lgpm? ${HAVE_GPM}
5439 Does Emacs use -ldbus? ${HAVE_DBUS}
5440 Does Emacs use -lgconf? ${HAVE_GCONF}
5441 Does Emacs use GSettings? ${HAVE_GSETTINGS}
5442 Does Emacs use a file notification library? ${NOTIFY_SUMMARY}
5443 Does Emacs use access control lists? ${ACL_SUMMARY}
5444 Does Emacs use -lselinux? ${HAVE_LIBSELINUX}
5445 Does Emacs use -lgnutls? ${HAVE_GNUTLS}
5446 Does Emacs use -lxml2? ${HAVE_LIBXML2}
5447 Does Emacs use -lfreetype? ${HAVE_FREETYPE}
5448 Does Emacs use -lm17n-flt? ${HAVE_M17N_FLT}
5449 Does Emacs use -lotf? ${HAVE_LIBOTF}
5450 Does Emacs use -lxft? ${HAVE_XFT}
5451 Does Emacs use -lsystemd? ${HAVE_LIBSYSTEMD}
5452 Does Emacs use -ljansson? ${HAVE_JSON}
5453 Does Emacs directly use zlib? ${HAVE_ZLIB}
5454 Does Emacs have dynamic modules support? ${HAVE_MODULES}
5455 Does Emacs use toolkit scroll bars? ${USE_TOOLKIT_SCROLL_BARS}
5456 Does Emacs support Xwidgets (requires gtk3)? ${HAVE_XWIDGETS}
5457 Does Emacs have threading support in lisp? ${threads_enabled}
5460 if test -n "${EMACSDATA}"; then
5461 AS_ECHO([" Environment variable EMACSDATA set to: $EMACSDATA"])
5463 if test -n "${EMACSDOC}"; then
5464 AS_ECHO([" Environment variable EMACSDOC set to: $EMACSDOC"])
5469 if test "$HAVE_NS" = "yes"; then
5471 AS_ECHO(["Run '${MAKE-make}' to build Emacs, then run 'src/emacs' to test it.
5472 Run '${MAKE-make} install' in order to build an application bundle.
5473 The application will go to nextstep/Emacs.app and can be run or moved
5475 if test "$EN_NS_SELF_CONTAINED" = "yes"; then
5476 echo "The application will be fully self-contained."
5478 AS_ECHO(["The lisp resources for the application will be installed under ${prefix}.
5479 You may need to run \"${MAKE-make} install\" with sudo. The application will fail
5480 to run if these resources are not installed."])
5485 case $opsys,$emacs_uname_r in
5487 AC_MSG_WARN([[building Emacs on Cygwin 1.5 is not supported.]])
5492 # Remove any trailing slashes in these variables.
5494 */) prefix=`AS_DIRNAME(["$prefix."])`;;
5496 case $exec_prefix in
5497 */) exec_prefix=`AS_DIRNAME(["$exec_prefix."])`;;
5500 if test "$HAVE_NS" = "yes"; then
5501 if test "$NS_IMPL_GNUSTEP" = yes; then
5502 AC_CONFIG_FILES([nextstep/GNUstep/Emacs.base/Resources/Info-gnustep.plist:nextstep/templates/Info-gnustep.plist.in \
5503 nextstep/GNUstep/Emacs.base/Resources/Emacs.desktop:nextstep/templates/Emacs.desktop.in])
5504 ns_check_file=Resources/Info-gnustep.plist
5506 AC_CONFIG_FILES([nextstep/Cocoa/Emacs.base/Contents/Info.plist:nextstep/templates/Info.plist.in \
5507 nextstep/Cocoa/Emacs.base/Contents/Resources/English.lproj/InfoPlist.strings:nextstep/templates/InfoPlist.strings.in])
5508 ns_check_file=Contents/Info.plist
5510 AC_SUBST(ns_check_file)
5513 AC_CONFIG_FILES([Makefile lib/gnulib.mk])
5515 dnl config.status treats $srcdir specially, so I think this is ok...
5516 AC_CONFIG_FILES([$srcdir/doc/man/emacs.1])
5518 m4_define([subdir_makefiles],
5519 [lib/Makefile lib-src/Makefile oldXMenu/Makefile doc/emacs/Makefile doc/misc/Makefile doc/lispintro/Makefile doc/lispref/Makefile src/Makefile lwlib/Makefile lisp/Makefile leim/Makefile nextstep/Makefile nt/Makefile])
5520 SUBDIR_MAKEFILES="subdir_makefiles"
5521 AC_CONFIG_FILES(subdir_makefiles)
5523 dnl test/ is not present in release tarfiles.
5524 opt_makefile=test/Makefile
5526 if test -f "$srcdir/$opt_makefile.in"; then
5527 SUBDIR_MAKEFILES="$SUBDIR_MAKEFILES $opt_makefile"
5528 dnl Again, it's best not to use a variable. Though you can add
5529 dnl ", [], [opt_makefile='$opt_makefile']" and it should work.
5530 AC_CONFIG_FILES([test/Makefile])
5534 dnl The admin/ directory used to be excluded from tarfiles.
5535 if test -d $srcdir/admin; then
5536 SUBDIR_MAKEFILES="$SUBDIR_MAKEFILES admin/charsets/Makefile admin/unidata/Makefile admin/grammars/Makefile"
5537 AC_CONFIG_FILES([admin/charsets/Makefile])
5538 AC_CONFIG_FILES([admin/unidata/Makefile])
5539 AC_CONFIG_FILES([admin/grammars/Makefile])
5543 SUBDIR_MAKEFILES_IN=`echo " ${SUBDIR_MAKEFILES}" | sed -e 's| | $(srcdir)/|g' -e 's|Makefile|Makefile.in|g'`
5545 AC_SUBST(SUBDIR_MAKEFILES_IN)
5547 dnl You might wonder (I did) why epaths.h is generated by running make,
5548 dnl rather than just letting configure generate it from epaths.in.
5549 dnl One reason is that the various paths are not fully expanded (see above);
5550 dnl e.g., gamedir='${localstatedir}/games/emacs'.
5551 dnl Secondly, the GNU Coding standards require that one should be able
5552 dnl to run 'make prefix=/some/where/else' and override the values set
5553 dnl by configure. This also explains the 'move-if-change' test and
5554 dnl the use of force in the 'epaths-force' rule in Makefile.in.
5555 AC_CONFIG_COMMANDS([src/epaths.h], [
5556 if test "${opsys}" = "mingw32"; then
5557 ${MAKE-make} MAKEFILE_NAME=do-not-make-Makefile epaths-force-w32
5559 ${MAKE-make} MAKEFILE_NAME=do-not-make-Makefile epaths-force
5560 fi || AC_MSG_ERROR(['src/epaths.h' could not be made.])
5561 ], [GCC="$GCC" CPPFLAGS="$CPPFLAGS" opsys="$opsys"])
5563 dnl NB we have to cheat and use the ac_... version because abs_top_srcdir
5564 dnl is not yet set, sigh. Or we could use ../$srcdir/src/.gdbinit,
5566 AC_CONFIG_COMMANDS([src/.gdbinit], [
5567 if test ! -f src/.gdbinit && test -f "$srcdir/src/.gdbinit"; then
5568 AS_ECHO(["source $ac_abs_top_srcdir/src/.gdbinit"]) > src/.gdbinit
5572 dnl Perhaps this would be better named doc-emacs-emacsver.texi?
5573 dnl See comments for etc-refcards-emacsver.tex.
5574 dnl Since we get a doc/emacs directory generated anyway, for the Makefile,
5575 dnl it is not quite the same. But we are generating in $srcdir.
5576 AC_CONFIG_COMMANDS([doc/emacs/emacsver.texi], [
5577 ${MAKE-make} -s --no-print-directory -C doc/emacs doc-emacsver || \
5578 AC_MSG_ERROR(['doc/emacs/emacsver.texi' could not be made.])
5581 dnl If we give this the more natural name, etc/refcards/emacsver.texi,
5582 dnl then a directory etc/refcards is created in the build directory,
5583 dnl which is probably harmless, but confusing (in out-of-tree builds).
5584 dnl (If we were to generate etc/refcards/Makefile, this might change.)
5585 dnl It is really $srcdir/etc/refcards/emacsver.tex that we generate.
5586 AC_CONFIG_COMMANDS([etc-refcards-emacsver.tex], [
5587 ${MAKE-make} -s MAKEFILE_NAME=do-not-make-Makefile etc-emacsver || \
5588 AC_MSG_ERROR(['etc/refcards/emacsver.tex' could not be made.])
5591 if test $AUTO_DEPEND = yes; then
5592 for dir in $AUTODEPEND_PARENTS; do
5593 AS_MKDIR_P([$dir/deps])
5599 if test ! "$with_mailutils"; then
5600 if test "$with_pop" = yes; then
5601 AC_MSG_WARN([This configuration installs a 'movemail' program
5602 that retrieves POP3 email via only insecure channels.
5603 To omit insecure POP3, you can use '$0 --without-pop'.])
5604 elif test "$with_pop" = no-by-default; then
5605 AC_MSG_WARN([This configuration installs a 'movemail' program
5606 that does not retrieve POP3 email. By default, Emacs 25 and earlier
5607 installed a 'movemail' program that retrieved POP3 email via only
5608 insecure channels, a practice that is no longer recommended but that
5609 you can continue to support by using '$0 --with-pop'.])
5614 # Don't suggest GNU Mailutils, as it hasn't been ported.
5617 emacs_fix_movemail="use '$0 --with-mailutils'"
5618 case `(movemail --version) 2>/dev/null` in
5620 *) emacs_fix_movemail="install GNU Mailutils
5621 <https://mailutils.org> and $emacs_fix_movemail";;
5623 AC_MSG_NOTICE([You might want to $emacs_fix_movemail.]);;
5627 test "$MAKE" = make || AC_MSG_NOTICE([Now you can run '$MAKE'.])